c Gate Questions

8/13/2019 c Gate Questions

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S.no Question

1 Which of the following is invalid?

2 The operator + in a+=4 means

3 Which of the following is an example of compounded assignment statement?

4 Which escape character can be used to beep from speaker in c ?

5 The size of a String variable is

6 The operator & is used for7 What will be the maximum size of a float variable?

8 The operator / can be applied to

9 The equality operator is represented by

10 Which of the following operator has the highest precedence?

11 1. #include

void main()

{

int x = 97;

char y = x;

printf("%c\n", y);

}

12 The number of tokens in the following C statement.

printf("i = %d, &i = %x", i, &i);

13 Which of the following statements is incorrect ?

14 If y is of integer type then the expression

3 * ( y - 8 ) / 9 and ( y - 8 )/ 9 * 3

15 What is (void*)0?

16 In which header file is the NULL macro defined?

17 What is the output of the following 'C' program?

main()

{

int a[5]={2,3};

printf("\n%d%d%d",a[2],a[3],a[4]);

}

18 Identify the invalid pointer arithmetic

19 Consider the declaration:

static struct { unsigned a:5;

unsigned b:5;

unsigned c:5;

unsigned d:5%:

}v=(1,2,3,4);

v occupies

20 If a structure is defined as

struct TAB{


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short a;

int b;

long c;

}TABLE[10];

the the total memory requirement for TABLE is

21 The function fopen("filename","r")returns

22 pick out the error in the program

#include

int main()

{

int a[] = {10, 20, 30, 40, 50};

int j;

for(j=0; j


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37 Array subscripts in C always start at

38 Maximum number of elements in the array declaration

int a[5][8] is

39 Pointers are of

40 A pointer to a pointer in a form of

41 C allows arrays of greater than two dimensions,

who will determined this

42 When the main function is called, it is called with the

arguments

43 In C, a Union is

44 The continue command cannot be used with

45 A Link is

46 The conversion characters for data input means that the data

item is

47 The printf() function retunes which value when an error occurs?

48 Header files in C contain

50 The type cast operator is

51 Explicit type conversion is known as

52 What will be the output of the expression 11 ^ 5?

53


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Option 1 Option 2 Option 3

' ' a

a=a+4 a+4=a a=4

a=5 a +=5 a=b=c

\a \b \m

1 byte 2 bytes 16 bytes

Bitwise AND Bitwise OR Logical AND1 byte 2 bytes 4 bytes

integer values float values double values

:= .EQ =

* ==' =>'

a b 97

3 26 10

C provides no input-output C provides no file access Provides no features to

features features manipulate composite

must yield the same must yield different may or may not yield

value value the same value

Representation representation error

of NULL pointer of void pointer

stdio.h stddef.h stdio.h and stddef.h

Garbage values Error 3 2 2

Addition of float value to comparison of pointers subtracting an integer

a pointer that do not point to the from a pointer

element of the same array

4 bytes 2 bytes 1 byte

14 140 40


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Nothing A value 0 or 1 depending A pointer to FILE

on whether the file filename,if it exitscould be opened or not

Error: Declaration syntax Error:Expression syntax Lvalue required

ink ack ite

30 27 9

integers File names Bytes

goodbye odbye dbye


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10 4 6

Lower bound Upper bound Range

Two Eight Twenty

&x[i-1] + sizeof (int) x + sizeof (int) * i x+i

2 2 2 1 0 1

3 26 10

Initialization is a part of It is a declaratrion It is a formal parameter

definition

1167 1164 1264

Addition of float value to a Comparision of pointers subtracting an integer

pointer that do not point to the from a pointer

element of the same

array

can be read as a single cannot be read as a single can be displayed as a


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entity entity single entity

-1 1 0

28 32 35

interger data type character data type unsigned integerdata type

multiple indirection a chain of pointers both a and b

programmer compiler parameter

argc argv None of these

memory location memory store memory screen

for switch do

a compiler an active debugger a C interpreter

An unsigned decimal A short integer A hexadecimal integer

interger

Positive value Zero Negative value

Compiler commands Library funcitons Header information

of C programs

(type) cast() //'

Casting conversion Disjunction

5 6 11


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Option 4 Correct Answer

abc abc'

a=4+4 a=a+4

a=b a +=5

\n \a

none 2 bytes

Logical OR Bitwise AND8 bytes 4 bytes

All of these All of these

==' =='

+'

runtime error a

21 10

all of these all of these

none of these may or may not yeld the

same value

none of these Representation

of NULL pointer

math.h stdio.h and stddef.h

0 0 0 0 0 0

assigning the value

0 to a pointer variable assigning the value 0 to the pointer variable

none of these 4 bytes

32 140


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A pointer to a new file A value 0 or 1 depending

after creating it on whether the filecould be opened or not

Rvalue required Lvalue required

let ink

3 30

bits Bytes

bye dbye


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that cannot be read

individually

value provided 0

by user

40

none of these integer data type

None of these both a & b

None of these

both a & b both a & b

None of these memory store

while switch

an analyzing tool in C

A string followed by

while space

None of these Negative value

Operators for files Library functons

" " (type)

Seperation Casting

None of these None of these

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c Gate Questions