c Language

NO. QUESTION A

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10

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During editing

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strinit()

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-1

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How will you print \n on the screen? printf("\n");

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strnstr()

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strchr()

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printf();

What will be output of the following program?#include<stdio.h>int main(){int x;x=10,20,30;printf("%d",x);return 0;}

In which stage the following code #include<stdio.h> gets replaced by the contents of the file stdio.h

Which of the following function sets first n characters of a string to a given character?

If the two strings are identical, then strcmp() function returns

The library function used to find the last occurrence of a character in a string is

Which of the following function is used to find the first occurrence of a given string in another string?

Which of the following function is more appropriate for reading in a multi-word string?

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Hello

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A

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6

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Good Morning

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abc abc

What will be the output of the program ?#include<stdio.h>#include<string.h>

int main(){ char str1[20] = "Hello", str2[20] = " World"; printf("%s\n", strcpy(str2, strcat(str1, str2))); return 0;}

What will be the output of the program ?#include<stdio.h>

int main(){ char p[] = "%d\n"; p[1] = 'c'; printf(p, 65); return 0;}

What will be the output of the program ?#include<stdio.h>#include<string.h>

int main(){ printf("%d\n", strlen("123456")); return 0;}


int main(){ printf(5+"Good Morning\n"); return 0;}

What will be the output of the program If characters 'a', 'b' and 'c' enter are supplied as input?#include<stdio.h>

int main(){ void fun(); fun(); printf("\n"); return 0;}void fun(){ char c; if((c = getchar())!= '\n') fun(); printf("%c", c);}

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Error

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C

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ptr is pointer to function

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t, t


int main(){ printf("India", "BIX\n"); return 0;}


int main(){ char *names[] = { "Suresh", "Siva", "Sona", "Baiju", "Ritu"}; int i; char *t; t = names[3]; names[3] = names[4]; names[4] = t; for(i=0; i<=4; i++) printf("%s,", names[i]); return 0;} Suresh, Siva, Sona, Baiju,

RituWhat will be output of the following program? #include<stdio.h> int main(){ float a=0.7; if(a<0.7){ printf("C"); } else{ printf("C++"); } return 0; }

What is meaning of following declaration? int(*ptr[5])();


int main(){ static char mess[6][30] = {"Don't walk in front of me...", "I may not follow;", "Don't walk behind me...", "Just walk beside me...", "And be my friend." };

printf("%c, %c\n", *(mess[2]+9), *(*(mess+2)+9)); return 0;}

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

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#include<conio.h>

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The binary equivalent of 5.375 is 101.101110111

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What will you do to treat the constant 3.14 as a float? use float(3.14f)

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C

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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;}

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;}

What will be the output of the program?#include<stdio.h>#include<math.h>int main(){ printf("%f\n", sqrt(36.0)); return 0;}

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4, 4, 4

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2.000000, 1.000000

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What is (void*)0?

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Can you combine the following two statements into one? char p = *malloc(100);

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In which header file is the NULL macro defined? stdio.h

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.

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((((a+i)+j)+k)+l)

32A pointer is

. What will be the output of the program?#include<stdio.h>#include<math.h>int main(){ printf("%d, %d, %d\n", sizeof(3.14f), sizeof(3.14), sizeof(3.14l)); return 0;}

What will be the output of the program?#include<stdio.h>#include<math.h>int main(){ float n=1.54; printf("%f, %f\n", ceil(n), floor(n)); return 0;}

Representation of NULL pointer

. If a variable is a pointer to a structure, then which of the following operator is used to access data members of the structure through the pointer variable?

What would be the equivalent pointer expression for referring the array elementa[i][j][k][l]

A keyword used to create variables

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*

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ink

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30

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x=31, y=502, z=502

The operator used to get value at address stored in a pointer variable is


int main(){ static char *s[] = {"black", "white", "pink", "violet"}; char **ptr[] = {s+3, s+2, s+1, s}, ***p; p = ptr; ++p; printf("%s", **p+1); return 0;}

. What will be the output of the program ?#include<stdio.h>

int main(){ int i=3, *j, k; j = &i; printf("%d\n", i**j*i+*j); return 0;}What will be the output of the program ?#include<stdio.h>

int main(){ int x=30, *y, *z; y=&x; /* Assume address of x is 500 and integer is 4 byte size */ z=y; *y++=*z++; x++; printf("x=%d, y=%d, z=%d\n", x, y, z); return 0;}

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Error

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10, 2, 4

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float **fun(float***);

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int main(){ char *str; str = "%s"; printf(str, "K\n"); return 0;}

. If the size of integer is 4bytes, What will be the output of the program?#include<stdio.h>

int main(){ int arr[] = {12, 13, 14, 15, 16}; printf("%d, %d, %d\n", sizeof(arr), sizeof(*arr), sizeof(arr[0])); return 0;}

Point out the compile time error in the program given below.#include<stdio.h>

int main(){ int *x; *x=100; return 0;} Error: invalid assignment

for x

Which of the following statements correctly declare a function that receives a pointer to pointer to a pointer to a float and returns a pointer to a pointer to a pointer to a pointer to a float?

Which of the following statements correct about k used in the below statement?char ****k; k is a pointer to a pointer

to a pointer to a char

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Output: Garbage value

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How will you free the allocated memory ? remove(var-name);

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-1, 0, 1, 2, 3, 4

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-1, 0, 1, 2, 3, 4

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What will the function rewind() do?

Which of the statements is correct about the program?#include<stdio.h>

int main(){ int arr[3][3] = {1, 2, 3, 4}; printf("%d\n", *(*(*(arr)))); return 0;}

What is the similarity between a structure, union and enumeration?

All of them let you define new values


int main(){ enum days {MON=-1, TUE, WED=6, THU, FRI, SAT}; printf("%d, %d, %d, %d, %d, %d\n", MON, TUE, WED, THU, FRI, SAT); return 0;}


int main(){ enum days {MON=-1, TUE, WED=6, THU, FRI, SAT}; printf("%d, %d, %d, %d, %d, %d\n", ++MON, TUE, WED, THU, FRI, SAT); return 0;}

Reposition the file pointer to a character reverse

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conio.h

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conio.h

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strnchar()

51What is stderr ? standard error

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What is the purpose of fflush() function

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returns a random number

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Input/output function prototypes and macros are defined in which header file?

Input/output function prototypes and macros are defined in which header file?

Which standard library function will you use to find the last occurance of a character in a string in C?

flushes all streams and specified streams

What will the function randomize() do in Turbo C under DOS?

What will be the output of the program?#include<stdio.h>

int main(){ int i; i = printf("How r u\n"); i = printf("%d\n", i); printf("%d\n", i); return 0;}

How r u72

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1

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What will function gcvt() do?

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aaaa

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int main(){ int i; i = scanf("%d %d", &i, &i); printf("%d\n", i); return 0;}

Convert vector to integer value


int main(){ int i; char c; for(i=1; i<=5; i++) { scanf("%c", &c); /* given input is 'a' */ printf("%c", c); ungetc(c, stdin); } return 0;}

Point out the error in the following program.#include<stdio.h>

int main(){ fprintf("IndiaBIX"); printf("%.ef", 2.0); return 0;} Error: unknown value in

printf() statement

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Error: in Array declaration

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int main(){ char str[] = "IndiaBIX"; printf("%.#s %2s", str, str); return 0;}



printf() statement



printf() statement.

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Infinite times

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Which of the following is not logical operator? &

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Character

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0, 1, 2, 3, 4, 5

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;}

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

Addition, Subtraction, Multiplication, Division

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

What will be the output of the program?#include<stdio.h>int main(){ int i=0; for(; i<=5; i++); printf("%d", i); return 0;}

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C-program

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b = 300 c = 200

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Infinite loop

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;}

What will be the output of the program?#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;}

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

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x and y are equal

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1 ... 65535

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It matters

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Infinite loop

What will be the output of the program?#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;}

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;}

What will be the output of the program?#include<stdio.h>int main(){ char ch; if(ch = printf("")) printf("It matters\n"); else printf("It doesn't matters\n"); return 0;}

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

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Hi

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0, 1, 3

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200

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300, 300, 200

What will be the output of the program?#include<stdio.h>int main(){ float a = 0.7; if(0.7 > a) printf("Hi\n"); else printf("Hello\n"); return 0;}

What will be the output of the program?#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;}

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

What will be the output of the program?#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;}

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x=2, y=1, z=1

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What will be the output of the program?#include<stdio.h>int main(){ int x=1, y=1; for(; y; printf("%d %d\n", x, y)) { y = x++ <= 5; } printf("\n"); return 0;}

2 13 14 15 16 17 0

What will be the output of the program?#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;}

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;} Error: No case statement

specified

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Output: Have a nice day

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;}

There should be a condition in the while loop

Point out the error in the program

f(int a, int b){ int a; a = 20; return a;}

Missing parenthesis in return statement

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;}

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Error: Statement missing

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1,2

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;}

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;} Error: Declaration

terminated incorrectly

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.

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A

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1

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It compiles

What will happen if in a C program you assign a value to an array element whose subscript exceeds the size of array?

The element will be set to 0.

What does the following declaration mean?int (*ptr)[10]; ptr is array of pointers to

10 integers

In C, if you pass an array as an argument to a function, what actually gets passed?

Value of elements in array

Which of the following statements mentioning the name of the array begins DOES NOT yield the base address?1: When array name is used with the sizeof operator.2: When array name is operand of the & operator.3: When array name is passed to scanf() function.4: When array name is passed to printf() function.

Which of the following statements are correct about an array?1: The array int num[26]; can store 26 elements.2: The expression num[1] designates the very first element in the array.3: It is necessary to initialize the array at the time of declaration.4: The declaration num[SIZE] is allowed if SIZE is a macro.

What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile?#include<stdio.h>#define SWAP(a, b, c)(c t; t=a, a=b, b=t)int main(){ int x=10, y=20; SWAP(x, y, int); printf("%d %d\n", x, y); return 0;}

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Compiles and print nothing During editing

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128 characters

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What do the 'c' and 'v' in argv stands for?

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strchr()

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printf();

98Which of the following is/are storage class Automatic

99NULL Pointer can be used as

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The maximum combined length of the command-line arguments including the spaces between adjacent arguments is

c' means argument control 'v' means argument vector

Which of the following function is used to find the first occurrence of a given string in another string?

Which of the following function is more appropriate for reading in a multi-word string?

To stop indirection in a recursive data structure

The use of “break” Statement to terminate a case in the switch statement

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B C D SOLUTION ANSWER

20 30 0 A

During linking During execution During preprocessing D

strnset() strset() strcset() B

1 0 YES C

echo "\\n"; printf('\n'); printf("\\n"); D

laststr() strrchr() strstr() C

strrchr() strstr() strnset() C

scanf(); gets(); puts(); C

World Hello World WorldHello C

a c 65 A

12 7 2 A

Good M Morning D

bca Infinite loop cba D

India BIX India BIX C

B

C++ NULL Compilation error A

B

k, k n, k m, f B

Suresh, Siva, Sona, Ritu, Baiju

Suresh, Siva, Baiju, Sona, Ritu

Suresh, Siva, Ritu, Sona, Baiju

ptr is array of pointer to function

ptr is pointer to such function which return type is array

ptr is pointer to array of function

double, long int, float C

#include<math.h> #include<stdlib.h> #include<dos.h> B

101.011 101011 None of above B

use 3.14f use f(3.14) use (f)(3.14) B

C++ Compiler error Non of above A

6 6 C

short int, double, long int

float, double, long double

Error: Prototype sqrt() not found

4, 8, 8 4, 8, 10 4, 8, 12 C

1.500000, 1.500000 1.550000, 2.000000 1.000000, 2.000000 A

Error None of above A

C

stddef.h stdio.h and stddef.h math.h C

& * -> D

*(*(*(*(a+i)+j)+k)+l) (((a+i)+j)+k+l) ((a+i)+j+k+l) B

All of the above C

Representation of void pointer

char *p = (char) malloc(100);

char *p = (char*)malloc(100);

char *p = (char *)(malloc*)(100);

A variable that stores address of an instruction

A variable that stores address of other variable

& && || A

ack ite let A

27 9 3 A

x=31, y=500, z=500 x=31, y=498, z=498 x=31, y=504, z=504 D

No output K %s C

20, 4, 4 16, 2, 2 20, 2, 2 B

No error None of above C

float *fun(float**); float fun(float***); float ****fun(float***); D

B

Error: suspicious pointer conversion

k is a pointer to a pointer to a pointer to a pointer to a char

k is a pointer to a char pointer

k is a pointer to a pointer to a char

Output: 1 Output: 3 Error: Invalid indirection D

free(var-name); delete(var-name); dalloc(var-name); B

B

-1, 2, 6, 3, 4, 5 -1, 0, 6, 2, 3, 4 -1, 0, 6, 7, 8, 9 D

Error 0, 1, 6, 3, 4, 5 0, 0, 6, 7, 8, 9 B

D

All of them let you define new data types

All of them let you define new pointers

All of them let you define new structures

Reposition the file pointer stream to end of file.

Reposition the file pointer to begining of that line.

Reposition the file pointer to begining of file.

stdlib.h stdio.h dos.h C

stdlib.h stdio.h dos.h C

strchar() strrchar() strrchr() D

standard error types C

flushes file buffer. A

C

B

standard error streams

standard error definitions

flushes only specified stream

flushes input/output buffer

returns a random number generator in the specified range.

returns a random number generator with a random value based on time

return a random number with a given seed value

How r u82

How r u11 Error: cannot assign

printf to variable

2 Garbage value B

B

aaaaa Garbage value. B

No error and prints "2.0" B

Error: cannot assign scanf to variable

Convert floating-point number to a string

Convert 2D array in to 1D array.

Covert multi Dimensional array to 1D array

Error in ungetc statement

Error: in fprintf() statement

No error and prints "IndiaBIX"

No error D



Error: printf statement

Error: unspecified character in printf





255 times 256 times 254 times B

&& || ! A

B

Integer Float enum C

5 1, 2, 3, 4 6 D

Division, Multiplication, Addition, Subtraction

Multiplication, Addition, Division, Subtraction

Addition, Division, Modulus, Subtraction

Ps Error None of above A

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

0 1 2 ... 65535 No output A0 1 2 ... 32767 - 32766 -32765 -1 0

x and y are not equal Unpredictable No output A

No output 0, 1, 2, 3, 4, 5 A

It doesn't matters matters No output B

0 1 2 ... 65535 No output D

Expression syntax error

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

Hello Hi Hello None of above A

1, 2, 3 3, 1, 3 1, 3, 1 C

30 100 500 B

Garbage, 300, 200 300, Garbage, 200 300, 300, Garbage C

A

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

No Error C

2 13 14 15 16 1

2 13 14 15 1

2 23 34 45 5

Error: No default specified

Error: infinite loop occurs

No error A

Redeclaration of a None of above C

No output C

There should be at least a semicolon in the while

The while loop should be replaced with for loop.

The function should be defined as int f(int a, int b)

Error: Expression syntax

Error: Undeclared identifier if

Error: Rvalue required A

Error: Syntax error None of above C

1,3,4 2,4 2 B

Error: Expression syntax

Error: Lvalue required

Error: Lvalue required

C

ptr is an pointer to array B

C

A, B B B, D B

1,4 2,3 2,4 B

Not compile C

The compiler would report an error.

The program may crash if some important data gets overwritten.

The array size would appropriately grow.

ptr is a pointer to an array of 10 integers

ptr is an array of 10 integers

First element of the array

Base address of the array

Address of the last element of array

Compiles with an warning

Compiles and print nothing

During linking During execution During preprocessing D

256 characters 67 characters D

C

strrchr() strstr() strnset() C

scanf(); gets(); puts(); C

Satatic Allocated All the above D

As an error value As an sentinel value All the above D

Both A & B Only A C

It may vary from one operating system to another

c' means argument count 'v' means argument vertex

c' means argument count 'v' means argument vector

c' means argument configuration 'v' means argument visibility

to force immediate termination of a loop

NO. QUESTION A

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Virtual class

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Which of the following type of class allows only one object of it to be created?

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B C D

Abstract class Singleton class Friend class

SOLUTION ANSWER

C

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c Language