c Language Object Types

1. How many times "IndiaBIX" is get printed?

#include<stdio.h>int main(){ int x; for(x=-1; x<=10; x++) { if(x < 5) continue; else break; printf("IndiaBIX"); } return 0;}

A. Infinite times B. 11 times

C. 0 times D. 10 times

2. How many times the while loop will get executed if a short int is 2 byte wide?

#include<stdio.h>int main(){ int j=1; while(j <= 255) { printf("%c %d\n", j, j); j++; } return 0;}

A. Infinite times B. 255 times

C. 256 times D. 254 times

3.

Which of the following is not logical operator?

A. & B. &&

C. || D. !

4.

In mathematics and computer programming, which is the correct order of mathematical operators ?

A. Addition, Subtraction, Multiplication, Division

B. Division, Multiplication, Addition, Subtraction

C. Multiplication, Addition, Division, Subtraction

D. Addition, Division, Modulus, Subtraction

5.

Which of the following cannot be checked in a switch-case statement?

A. Character B. Integer

C. Float D. enum

.1. What will be the output of the program?

1

#include<stdio.h>int main(){ int i=0; for(; i<=5; i++); printf("%d,", i); return 0;}

A. 0, 1, 2, 3, 4, 5 B. 5

C. 1, 2, 3, 4 D. 6

2. What will be the output of the program?

#include<stdio.h>int main(){ char str[]="C-program"; int a = 5; printf(a >10?"Ps\n":"%s\n", str); return 0;}

A. C-program B. Ps

C. Error D. None of above


#include<stdio.h>int main(){ int a = 500, b = 100, c; if(!a >= 400) b = 300; c = 200; printf("b = %d c = %d\n", b, c); return 0;}

A. b = 300 c = 200 B. b = 100 c = garbage

C. b = 300 c = garbage D. b = 100 c = 200


#include<stdio.h>int main(){ unsigned int i = 65535; /* Assume 2 byte integer*/ while(i++ != 0) printf("%d",++i); printf("\n"); return 0;}

A. Infinite loop

B. 0 1 2 ... 65535

C. 0 1 2 ... 32767 - 32766 -32765 -1 0

D. No output

.


2

#include<stdio.h>int main(){ int x = 3; float y = 3.0; if(x == y) printf("x and y are equal"); else printf("x and y are not equal"); return 0;}

A. x and y are equal B. x and y are not equal

C. Unpredictable D. No output

6. What will be the output of the program, if a short int is 2 bytes wide?

#include<stdio.h>int main(){ short int i = 0; for(i<=5 && i>=-1; ++i; i>0) printf("%u,", i); return 0;}

A. 1 ... 65535 B. Expression syntax error

C. No output D. 0, 1, 2, 3, 4, 5


#include<stdio.h>int main(){ char ch; if(ch = printf("")) printf("It matters\n"); else printf("It doesn't matters\n"); return 0;}

A. It matters B. It doesn't matters

C. matters D. No output


#include<stdio.h>int main(){ unsigned int i = 65536; /* Assume 2 byte integer*/ while(i != 0) printf("%d",++i); printf("\n"); return 0;}

A. Infinite loop

B. 0 1 2 ... 65535

C. 0 1 2 ... 32767 - 32766 -32765 -1 0

D. No output


3

#include<stdio.h>int main(){ float a = 0.7; if(0.7 > a) printf("Hi\n"); else printf("Hello\n"); return 0;}

A. Hi B. Hello

C. Hi Hello D. None of above


#include<stdio.h>int main(){ int a=0, b=1, c=3; *((a) ? &b : &a) = a ? b : c; printf("%d, %d, %d\n", a, b, c); return 0;}

A. 0, 1, 3 B. 1, 2, 3

C. 3, 1, 3 D. 1, 3, 1


#include<stdio.h>int main(){ int k, num = 30; k = (num < 10) ? 100 : 200; printf("%d\n", num); return 0;}

A. 200 B. 30

C. 100 D. 500


#include<stdio.h>int main(){ int a = 300, b, c; if(a >= 400) b = 300; c = 200; printf("%d, %d, %d\n", a, b, c); return 0;}

A. 300, 300, 200 B. Garbage, 300, 200

C. 300, Garbage, 200 D. 300, 300, Garbage


#include<stdio.h>int main(){ int x=1, y=1; for(; y; printf("%d %d\n", x, y)) {

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y = x++ <= 5; } printf("\n"); return 0;}

A.

2 13 14 15 16 17 0

B.

2 13 14 15 16 1

C.

2 13 14 15 1

D.

2 23 34 45 5


#include<stdio.h>int main(){ int i = 5; while(i-- >= 0) printf("%d,", i); i = 5; printf("\n"); while(i-- >= 0) printf("%i,", i); while(i-- >= 0) printf("%d,", i); return 0;}

A.4, 3, 2, 1, 0, -14, 3, 2, 1, 0, -1

B.5, 4, 3, 2, 1, 05, 4, 3, 2, 1, 0

C. Error D.5, 4, 3, 2, 1, 05, 4, 3, 2, 1, 05, 4, 3, 2, 1, 0


#include<stdio.h>int main(){ int i=3; switch(i) { case 1: printf("Hello\n"); case 2: printf("Hi\n"); case 3: continue; default: printf("Bye\n"); } return 0;}

A. Error: Misplaced continue B. Bye

C. No output D. Hello Hi

5


#include<stdio.h>int main(){ int x = 10, y = 20; if(!(!x) && x) printf("x = %d\n", x); else printf("y = %d\n", y); return 0;}

A. y =20 B. x = 0

C. x = 10 D. x = 1


#include<stdio.h>int main(){ int i=4; switch(i) { default: printf("This is default\n"); case 1: printf("This is case 1\n"); break; case 2: printf("This is case 2\n"); break; case 3: printf("This is case 3\n"); } return 0;}

A.This is defaultThis is case 1

B.This is case 3This is default

C.This is case 1This is case 3

D. This is default


#include<stdio.h>int main(){ int i = 1; switch(i) { printf("Hello\n"); case 1: printf("Hi\n"); break; case 2: printf("\nBye\n"); break; } return 0;}

A.HelloHi

B.HelloBye

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C. Hi D. Bye


#include<stdio.h>int main(){ char j=1; while(j < 5) { printf("%d, ", j); j = j+1; } printf("\n"); return 0;}

A. 1 2 3 ... 127

B. 1 2 3 ... 255

C. 1 2 3 ... 127 128 0 1 2 3 ... infinite times

D. 1, 2, 3, 4


#include<stdio.h>int main(){ int x, y, z; x=y=z=1; z = ++x || ++y && ++z; printf("x=%d, y=%d, z=%d\n", x, y, z); return 0;}

A. x=2, y=1, z=1 B. x=2, y=2, z=1

C. x=2, y=2, z=2 D. x=1, y=2, z=1

1. Point out the error, if any in the for loop.

#include<stdio.h>int main(){ int i=1; for(;;) { printf("%d\n", i++); if(i>10) break; } return 0;}

A. There should be a condition in the for loop

B. The two semicolons should be dropped

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C. The for loop should be replaced with while loop.

D. No error

View Answer Online Compiler Report Discuss in Forum

2. Point out the error, if any in the program.

#include<stdio.h>int main(){ int a = 10; switch(a) { } printf("This is c program."); return 0;}

A. Error: No case statement specified

B. Error: No default specified

C. No Error

D. Error: infinite loop occurs



#include<stdio.h>int main(){ int i = 1; switch(i) { printf("This is c program."); case 1: printf("Case1"); break; case 2: printf("Case2"); break; }return 0;}

A. Error: No default specified

B. Error: Invalid printf statement after switch statement

C. No Error and prints "Case1"

D. None of above


4. Point out the error, if any in the while loop.

#include<stdio.h>int main(){ int i=1; while() { printf("%d\n", i++); if(i>10) break; } return 0;}

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A. There should be a condition in the while loop

B. There should be at least a semicolon in the while

C. The while loop should be replaced with for loop.

D. No error


5. Which of the following errors would be reported by the compiler on compiling the program given below?

#include<stdio.h>int main(){ int a = 5; switch(a) { case 1: printf("First");

case 2: printf("Second");

case 3 + 2: printf("Third");

case 5: printf("Final"); break;

} return 0;}

A. There is no break statement in each case.

B. Expression as in case 3 + 2 is not allowed.

C. Duplicate case case 5:

D. No error will be reported.

View Answer Online Compiler Report Discuss in Forum6. Point out the error, if any in the program.

#include<stdio.h>int main(){ int P = 10; switch(P) { case 10: printf("Case 1");

case 20: printf("Case 2"); break;

case P: printf("Case 2"); break; } return 0;}

A. Error: No default value is specified

B. Error: Constant expression required at line case P:

C. Error: There is no break statement in each case.

D. No error will be reported.

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#include<stdio.h>int main(){ int i = 1; switch(i) { case 1: printf("Case1"); break; case 1*2+4: printf("Case2"); break; }return 0;}

A. Error: in case 1*2+4 statement

B. Error: No default specified

C. Error: in switch statement

D. No Error

8. Point out the error, if any in the while loop.

#include<stdio.h>int main(){ void fun(); int i = 1; while(i <= 5) { printf("%d\n", i); if(i>2) goto here; }return 0;}void fun(){ here: printf("It works");}

A. No Error: prints "It works"

B. Error: fun() cannot be accessed

C. Error: goto cannot takeover control to other function

D. No error


#include<stdio.h> int main(){ int a = 10, b; a >=5 ? b=100: b=200; printf("%d\n", b); return 0;}

A. 100 B. 200

10


C. Error: L value required for b D. Garbage value

1. Which of the following statements are correct about the below program?

#include<stdio.h>int main(){ int i = 10, j = 20; if(i = 5) && if(j = 10) printf("Have a nice day"); return 0;}

A. Output: Have a nice day

B. No output

C. Error: Expression syntax

D. Error: Undeclared identifier if


#include<stdio.h>int main(){ int i = 10, j = 15; if(i % 2 = j % 3) printf("IndiaBIX\n"); return 0;}

A. Error: Expression syntax B. Error: Lvalue required

C. Error: Rvalue required D. The Code runs successfully

3. Which of the following statements are correct about the program?

#include<stdio.h>int main(){ int x = 30, y = 40; if(x == y) printf("x is equal to y\n");

else if(x > y) printf("x is greater than y\n");

else if(x < y) printf("x is less than y\n") return 0;}

A. Error: Statement missing B. Error: Expression syntax

C. Error: Lvalue required D. Error: Rvalue required

4. Which of the following statements are correct about an if-else statements in a C-

program?

1: Every if-else statement can be replaced by an equivalent statements using ? ; operators

2: Nested if-else statements are allowed.

3: Multiple statements in an if block are allowed.

4: Multiple statements in an else block are allowed.

A. 1 and 2 B. 2 and 3

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C. 1, 2 and 4 D. 2, 3, 4


#include<stdio.h>int main(){ int i = 0; i++; if(i <= 5) { printf("IndiaBIX\n"); exit(0); main(); } return 0;}

A. The program prints 'IndiaBIX' 5 times

B. The program prints 'IndiaBIX' one time

C. The call to main() after exit() doesn't materialize.

D. The compiler reports an error since main() cannot call itself.

6. Which of the following statements are correct about the below C-program?

#include<stdio.h>int main(){ int x = 10, y = 100%90, i; for(i=1; i<10; i++) if(x != y); printf("x = %d y = %d\n", x, y); return 0;}

1 : The printf() function is called 10 times.

2 : The program will produce the output x = 10 y = 10

3 : The ; after the if(x!=y) will NOT produce an error.

4 : The program will not produce output.

A. 1 B. 2, 3

C. 3, 4 D. 4

7. Which of the following sentences are correct about a for loop in a C program?

1: for loop works faster than a while loop.

2: All things that can be done using a for loop can also be done using a whileloop.

3: for(;;); implements an infinite loop.

4: for loop can be used if we want statements in a loop get executed at least once.

A. 1 B. 1, 2

C. 2, 3 D. 2, 3, 4


#include<stdio.h>int main(){ int n = 0, y = 1; y == 1 ? n=0 : n=1; if(n) printf("Yes\n"); else

12

printf("No\n"); return 0;}

A. Error: Declaration terminated incorrectly

B. Error: Syntax error

C. Error: Lvalue required

D. None of above

9. Which of the following sentences are correct about a switch loop in a C program?

1: switch is useful when we wish to check the value of variable against a particular set of values.

2: switch is useful when we wish to check whether a value falls in different ranges.

3: Compiler implements a jump table for cases used in switch.

4: It is not necessary to use a break in every switch statement.

A. 1,2 B. 1,3,4

C. 2,4 D. 2

1.

A short integer is at least 16 bits wide and a long integer is at least 32 bits wide.

A. True B. False

2.

If scanf() is used to store a value in a char variable then along with the value a carriage

return(\r) also gets stored it.

A. True B. False

3.

The modulus operator cannot be used with a long double.

A. True B. False

4.

A char variable can store either an ASCII character or a Unicode character.

A. True B. False

View Answer Online Compiler Report Discuss in Forum1.

The way the break is used to take control out of switch and continue to take control of the beginning of the switch?

A. Yes B. No


2.

Can we use a switch statement to switch on strings?

A. Yes B. No


3.

We want to test whether a value lies in the range 2 to 4 or 5 to 7. Can we do this using a switch?

A. Yes B. No


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4.

By default, the data type of a constant without a decimal point is int, whereas the one with a decimal point is a double.

A. Yes B. No


Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?

A. rem = 3.14 % 2.1;

B. rem = modf(3.14, 2.1);

C. rem = fmod(3.14, 2.1);

D. Remainder cannot be obtain in floating point division.


2.

What are the types of linkages?

A. Internal and External B. External, Internal and None

C. External and None D. Internal


3.

Which of the following special symbol allowed in a variable name?

A. * (asterisk) B. | (pipeline)

C. - (hyphen) D. _ (underscore)


4. Is there any difference between following declarations?

1 : extern int fun();

2 : int fun();

A. Both are identical

B. No difference, except extern int fun(); is probably in another file

C. int fun(); is overrided with extern int fun();

D. None of these


5.

How would you round off a value from 1.66 to 2.0?

A. ceil(1.66) B. floor(1.66)

C. roundup(1.66) D. roundto(1.66)


By default a real number is treated as a

A. float B. double

C. long double D. far double


7. Which of the following is not user defined data type?

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1 :struct book{ char name[10]; float price; int pages;};

2 :long int l = 2.35;

3 :enum day {Sun, Mon, Tue, Wed};

A. 1 B. 2

C. 3 D. Both 1 and 2


8.

Is the following statement a declaration or definition?extern int i;

A. Declaration B. Definition

C. Function D. Error


9. Identify which of the following are declarations

1 : extern int x;

2 : float square ( float x ) { ... }

3 : double pow(double, double);

A. 1 B. 2

C. 1 and 3 D. 3


10. In the following program where is the variable a getting defined and where it is getting

declared?

#include<stdio.h>int main(){ extern int a; printf("%d\n", a); return 0;}int a=20;

A. extern int a is declaration, int a = 20 is the definition

B. int a = 20 is declaration, extern int a is the definition

C. int a = 20 is definition, a is not defined

D. a is declared, a is not defined

View Answer Online Compiler Report Discuss in ForumWhen we mention the prototype of a function?

A. Defining B. Declaring

C. Prototyping D. Calling


What are the different types of real data type in C ?

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A. float, double B. short int, double, long int

C. float, double, long double D. double, long int, float


2.

What will you do to treat the constant 3.14 as a long double?

A. use 3.14LD B. use 3.14L

C. use 3.14DL D. use 3.14LF


3. If the binary eauivalent of 5.375 in normalised form is 0100 0000 1010 1100 0000 0000 0000 0000, what will be the output of the program (on intel machine)?

#include<stdio.h>#include<math.h>int main(){ float a=5.375; char *p; int i; p = (char*)&a; for(i=0; i<=3; i++) printf("%02x\n", (unsigned char)p[i]); return 0;}

A. 40 AC 00 00 B. 04 CA 00 00

C. 00 00 AC 40 D. 00 00 CA 04


4.

Which of the following range is a valid long double ?

A. 3.4E-4932 to 1.1E+4932 B. 3.4E-4932 to 3.4E+4932

C. 1.1E-4932 to 1.1E+4932 D. 1.7E-4932 to 1.7E+4932


5. Which statement will you add in the following program to work it correctly?

#include<stdio.h>int main(){ printf("%f\n", log(36.0)); return 0;}

A. #include<conio.h> B. #include<math.h>

C. #include<stdlib.h> D. #include<dos.h>


6.

We want to round off x, a float, to an int value, The correct way to do is

A. y = (int)(x + 0.5) B. y = int(x + 0.5)

C. y = (int)x + 0.5 D. y = (int)((int)x + 0.5)


7.

The binary equivalent of 5.375 is

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A. 101.101110111 B. 101.011

C. 101011 D. None of above


8.

A float occupies 4 bytes. If the hexadecimal equivalent of these 4 bytes are A, B, C and D, then when this float is stored in memory in which of the following order do these

bytes gets stored?

A. ABCD

B. DCBA

C. 0xABCD

D. Depends on big endian or little endian architecture


9.

What will you do to treat the constant 3.14 as a float?

A. use float(3.14f) B. use 3.14f

C. use f(3.14) D. use (f)(3.14)


10.

Which of the following statement obtains the remainder on dividing 5.5 by 1.3 ?

A. rem = (5.5 % 1.3) B. rem = modf(5.5, 1.3)

C. rem = fmod(5.5, 1.3) D. Error: we can't divide

View Answer Online Compiler Report Discuss in Forum1. What will be the output of the program?

#include<stdio.h>int main(){ float a=0.7; if(a < 0.7) printf("C\n"); else printf("C++\n"); return 0;}

A. C B. C++

C. Compiler error D. Non of above



#include<stdio.h>int main(){ float *p; printf("%d\n", sizeof(p)); return 0;}

A. 2 in 16bit compiler, 4 in 32bit compiler

B. 4 in 16bit compiler, 2 in 32bit compiler

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C. 4 in 16bit compiler, 4 in 32bit compiler

D. 2 in 16bit compiler, 2 in 32bit compiler



#include<stdio.h>int main(){ float fval=7.29; printf("%d\n", (int)fval); return 0;}

A. 0 B. 0.0

C. 7.0 D. 7



#include<stdio.h>#include<math.h>int main(){ printf("%f\n", sqrt(36.0)); return 0;}

A. 6.0 B. 6

C. 6.000000 D. Error: Prototype sqrt() not found.



#include<stdio.h>#include<math.h>int main(){ printf("%d, %d, %d\n", sizeof(3.14f), sizeof(3.14), sizeof(3.14l)); return 0;}

A. 4, 4, 4 B. 4, 8, 8

C. 4, 8, 10 D. 4, 8, 12


#include<stdio.h>int main(){ float f=43.20; printf("%e, ", f); printf("%f, ", f); printf("%g", f); return 0;}

A. 4.320000e+01, 43.200001, 43.2 B. 4.3, 43.22, 43.21

C. 4.3e, 43.20f, 43.00 D. Error



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#include<stdio.h>int main(){ float a=0.7; if(a < 0.7f) printf("C\n"); else printf("C++\n"); return 0;}

A. C B. C++

C. Compiler error D. Non of above



#include<stdio.h>#include<math.h>int main(){ float n=1.54; printf("%f, %f\n", ceil(n), floor(n)); return 0;}

A. 2.000000, 1.000000 B. 1.500000, 1.500000

C. 1.550000, 2.000000 D. 1.000000, 2.000000



#include<stdio.h>int main(){ float d=2.25; printf("%e,", d); printf("%f,", d); printf("%g,", d); printf("%lf", d); return 0;}

A. 2.2, 2.50, 2.50, 2.5

B. 2.2e, 2.25f, 2.00, 2.25

C. 2.250000e+000, 2.250000, 2.25, 2.250000

D. Error


In which numbering system can the binary number 1011011111000101 be easily

converted to?

A. Decimal system B. Hexadecimal system

C. Octal system D. No need to convert


2.

Which bitwise operator is suitable for turning off a particular bit in a number?

A. && operator B. & operator

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C. || operator D. ! operator


3.

Which bitwise operator is suitable for turning on a particular bit in a number?


C. || operator D. | operator


4.

Which bitwise operator is suitable for checking whether a particular bit is on or off?


C. || operator D. ! operator

View Answer Online Compiler Report Discuss in Forum1. Assunming, integer is 2 byte, What will be the output of the program?

#include<stdio.h>

int main(){ printf("%x\n", -1>>1); return 0;}

A. ffff B. 0fff

C. 0000 D. fff0


2. If an unsigned int is 2 bytes wide then, What will be the output of the program ?

#include<stdio.h>

int main(){ unsigned int m = 32; printf("%x\n", ~m); return 0;}

A. ffff B. 0000

C. ffdf D. ddfd


3. Assuming a integer 2-bytes, What will be the output of the program?

#include<stdio.h>

int main(){ printf("%x\n", -1<<3); return 0;}

A. ffff B. fff8

C. 0 D. -1


4. If an unsigned int is 2 bytes wide then, What will be the output of the program ?

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#include<stdio.h>

int main(){ unsigned int a=0xffff; ~a; printf("%x\n", a); return 0;}

A. ffff B. 0000

C. 00ff D. ddfd



#include<stdio.h>

int main(){ unsigned char i = 0x80; printf("%d\n", i<<1); return 0;}

A. 0 B. 256

C. 100 D. 80


#include<stdio.h>

int main(){ printf("%d >> %d %d >> %d\n", 4 >> 1, 8 >> 1); return 0;}

A. 4 1 8 1

B. 4 >> 1 8 >> 1

C. 2 >> 4 Garbage value >> Garbage value

D. 2 4



#include<stdio.h>

int main(){ char c=48; int i, mask=01; for(i=1; i<=5; i++) { printf("%c", c|mask); mask = mask<<1; } return 0;}

A. 12400 B. 12480

C. 12500 D. 12556


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#define P printf("%d\n", -1^~0);#define M(P) int main()\ {\ P\ return 0;\ }M(P)

A. 1 B. 0

C. -1 D. 2


9. What will be the output of the program ?

#include<stdio.h>

int main(){ int i=32, j=0x20, k, l, m; k=i|j; l=i&j; m=k^l; printf("%d, %d, %d, %d, %d\n", i, j, k, l, m); return 0;}

A. 0, 0, 0, 0, 0 B. 0, 32, 32, 32, 32

C. 32, 32, 32, 32, 0 D. 32, 32, 32, 32, 32



#include<stdio.h>

int main(){ printf("%d %d\n", 32<<1, 32<<0); printf("%d %d\n", 32<<-1, 32<<-0); printf("%d %d\n", 32>>1, 32>>0); printf("%d %d\n", 32>>-1, 32>>-0); return 0;}

A. Garbage values B.

64 320 3216 320 32

C. All zeros D.

8 00 032 00 16


#include<stdio.h>

int main(){ unsigned int res; res = (64 >>(2+1-2)) & (~(1<<2)); printf("%d\n", res); return 0;}

A. 32 B. 64

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C. 0 D. 128


12. What will be the output of the program ?

#include<stdio.h>

int main(){ int i=4, j=8; printf("%d, %d, %d\n", i|j&j|i, i|j&&j|i, i^j); return 0;}

A. 4, 8, 0 B. 1, 2, 1

C. 12, 1, 12 D. 0, 0, 0

View Answer Online Compiler Report Discuss in Forum1. Which of the following statements are correct about the program?

#include<stdio.h>

int main(){ unsigned int num; int i; scanf("%u", &num); for(i=0; i<16; i++) { printf("%d", (num<<i & 1<<15)?1:0); } return 0;}

A. It prints all even bits from num

B. It prints all odd bits from num

C. It prints binary equivalent num

D. Error



#include<stdio.h>

int main(){ unsigned int num; int c=0; scanf("%u", &num); for(;num;num>>=1) { if(num & 1) c++; } printf("%d", c); return 0;}

A. It counts the number of bits that are ON (1) in the number num.

B. It counts the number of bits that are OFF (0) in the number num.

C. It sets all bits in the number num to 1

D. Error


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#include<stdio.h>char *fun(unsigned int num, int base);

int main(){ char *s; s=fun(128, 2); s=fun(128, 16); printf("%s\n",s); return 0;}char *fun(unsigned int num, int base){ static char buff[33]; char *ptr = &buff[sizeof(buff)-1]; *ptr = '\0'; do { *--ptr = "0123456789abcdef"[num %base]; num /=base; }while(num!=0); return ptr;}

A. It converts a number to a given base.

B. It converts a number to its equivalent binary.

C. It converts a number to its equivalent hexadecimal.

D. It converts a number to its equivalent octal.



#include<stdio.h>

int main(){ unsigned int m[] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80}; unsigned char n, i; scanf("%d", &n); for(i=0; i<=7; i++) { if(n & m[i]) printf("yes"); } return 0;}

A. It will put OFF all bits that are ON in the number n

B. It will test whether the individual bits of n are ON or OFF

C. It will put ON all bits that are OFF in the number n

D. It will report compilation errors in the if statement.


Left shifting a number by 1 is always equivalent to multiplying it by 2.

A. True B. False


2.

In the statement expression1 >> expression2. if expression1 is a signed integer

with its leftmost bit set to 1 then on right shifting it the result of the statement will vary from computer to computer

A. True B. False


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3.

Bitwise & and | are unary operators

A. True B. False


4.

Bitwise & can be used to check if more than one bit in a number is on.

A. True B. False


5.

Bitwise & can be used to check if a bit in number is set or not.

A. True B. False


Bitwise & can be used to divide a number by powers of 2

A. True B. False


7.

Left shifting an unsigned int or char by 1 is always equivalent to multiplying it by 2.

A. True B. False


8.

On left shifting, the bits from the left are rotated and brought to the right and accommodated where there is empty space on the right?

A. True B. False


Bitwise & can be used in conjunction with ~ operator to turn off 1 or more bits in a number.

A. Yes B. No


2.

Bitwise can be used to reverse a sign of a number.

A. Yes B. No


3.

Bitwise can be used to generate a random number.

A. Yes B. No


4.

Bitwise | can be used to multiply a number by powers of 2.

A. Yes B. No


5.

Bitwise | can be used to set multiple bits in number.

A. Yes B. No


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6.

Bitwise can be used to perform addition and subtraction.

A. Yes B. No


7.

Bitwise | can be used to set a bit in number.

A. Yes B. No


Which of the following is the correct order of evaluation for the below expression?z = x + y * z / 4 % 2 - 1

A. * / % + - = B. = * / % + -

C. / * % - + = D. * % / - + =


2.

Which of the following correctly shows the hierarchy of arithmetic operations in C?

A. / + * - B. * - / +

C. + - / * D. / * + -


3.

Which of the following is the correct usage of conditional operators used in C?

A. a>b ? c=30 : c=40; B. a>b ? c=30;

C. max = a>b ? a>c?a:c:b>c?b:c D. return (a>b)?(a:b)


4.

Which of the following is the correct order if calling functions in the below code?a = f1(23, 14) * f2(12/4) + f3();

A. f1, f2, f3

B. f3, f2, f1

C. Order may vary from compiler to compiler

D. None of above


5. Which of the following are unary operators in C?

1. !

2. sizeof

3. ~

4. &&

A. 1, 2 B. 1, 3

C. 2, 4 D. 1, 2, 3

View Answer Online Compiler Report Discuss in ForumIn which order do the following gets evaluated

1. Relational

2. Arithmetic

3. Logical

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http://www.indiabix.com/c-programming/expressions/discussion-98







4. Assignment

A. 2134 B. 1234

C. 4321 D. 3214


#include<stdio.h>int main(){ int i=-3, j=2, k=0, m; m = ++i && ++j && ++k; printf("%d, %d, %d, %d\n", i, j, k, m); return 0;}

A. -2, 3, 1, 1 B. 2, 3, 1, 2

C. 1, 2, 3, 1 D. 3, 3, 1, 2


2. Assunming, integer is 2 byte, What will be the output of the program?

#include<stdio.h>

int main(){ printf("%x\n", -2<<2); return 0;}

A. ffff B. 0

C. fff8 D. Error



#include<stdio.h>int main(){ int i=-3, j=2, k=0, m; m = ++i || ++j && ++k; printf("%d, %d, %d, %d\n", i, j, k, m); return 0;}

A. 2, 2, 0, 1 B. 1, 2, 1, 0

C. -2, 2, 0, 0 D. -2, 2, 0, 1



#include<stdio.h>int main(){ int x=12, y=7, z; z = x!=4 || y == 2; printf("z=%d\n", z); return 0;}

A. z=0 B. z=1

C. z=4 D. z=2


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#include<stdio.h>int main(){ static int a[20]; int i = 0; a[i] = i ; printf("%d, %d, %d\n", a[0], a[1], i); return 0;}

A. 1, 0, 1 B. 1, 1, 1

C. 0, 0, 0 D. 0, 1, 0


#include<stdio.h>int main(){ int i=4, j=-1, k=0, w, x, y, z; w = i || j || k; x = i && j && k; y = i || j &&k; z = i && j || k; printf("%d, %d, %d, %d\n", w, x, y, z); return 0;}

A. 1, 1, 1, 1 B. 1, 1, 0, 1

C. 1, 0, 0, 1 D. 1, 0, 1, 1



#include<stdio.h>int main(){ int i=-3, j=2, k=0, m; m = ++i && ++j || ++k; printf("%d, %d, %d, %d\n", i, j, k, m); return 0;}

A. 1, 2, 0, 1 B. -3, 2, 0, 1

C. -2, 3, 0, 1 D. 2, 3, 1, 1



#include<stdio.h>int main(){ int x=4, y, z; y = --x; z = x--; printf("%d, %d, %d\n", x, y, z); return 0;}

A. 4, 3, 3 B. 4, 3, 2

C. 3, 3, 2 D. 2, 3, 3



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#include<stdio.h>int main(){ int i=3; i = i++; printf("%d\n", i); return 0;}

A. 3 B. 4

C. 5 D. 6



#include<stdio.h>int main(){ int a=100, b=200, c; c = (a == 100 || b > 200); printf("c=%d\n", c); return 0;}

A. c=100 B. c=200

C. c=1 D. c=300


#include<stdio.h>int main(){ int x=55; printf("%d, %d, %d\n", x<=55, x=40, x>=10); return 0;}

A. 1, 40, 1 B. 1, 55, 1

C. 1, 55, 0 D. 1, 1, 1



#include<stdio.h>int main(){ int i=2; printf("%d, %d\n", ++i, ++i); return 0;}

A. 3, 4

B. 4, 3

C. 4, 4

D. Output may vary from compiler to compiler



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#include<stdio.h>int main(){ int k, num=30; k = (num>5 ? (num <=10 ? 100 : 200): 500); printf("%d\n", num); return 0;}

A. 200 B. 30

C. 100 D. 500



#include<stdio.h>int main(){ char ch; ch = 'A'; printf("The letter is"); printf("%c", ch >= 'A' && ch <= 'Z' ? ch + 'a' - 'A':ch); printf("Now the letter is"); printf("%c\n", ch >= 'A' && ch <= 'Z' ? ch : ch + 'a' - 'A'); return 0;}

A.The letter is aNow the letter is A

B.The letter is ANow the letter is a

C. Error D. None of above



#include<stdio.h>int main(){ int i=2; int j = i + (1, 2, 3, 4, 5); printf("%d\n", j); return 0;}

A. 4 B. 7

C. 6 D. 5


Associativity has no role to play unless the precedence of operator is same.

A. True B. False


2.

The expression of the right hand side of || operators doesn't get evaluated if the left hand

side determines the outcome.

A. True B. False


3.

In the expression a=b=5 the order of Assignment is NOT decided by Associativity of

operators

A. True B. False


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4.

Associativity of an operator is either Left to Right or Right to Left.

A. True B. False

View Answer Online Compiler Report Discuss in Forum1. Are the following two statement same?

1. a <= 20 ? b = 30: c = 30;

2. (a <=20) ? b : c = 30;

A. Yes B. No


2.

Two different operators would always have different Associativity.

A. Yes B. No


3.

Will the expression *p = p be disallowed by the compiler?

A. Yes B. No


4.

Every operator has an Associativity

A. Yes B. No


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