T&P Test on MCQs

#include<stdio.h>

  

void main()

{

    int x = 20;

int *y;

      

    // Assume address of x is 500 and  integer is 4 byte size 

    y = &x; 

     *y++; 

     x++;

    printf("x = %d, y = %d \n", x, y);

   }

• x=21, y=504

• x=21, y=506

• x=21, y=508

• x=21, y=510

What is the output of the following C code?

#include <stdio.h>

void main() {

int arr[2][3];

arr[][]={{1, 2, 3}, {4, 5, 6}};

printf("%d\n", arr[1][0]);

}

• 2

• 1

• 4

• Compilation Error

What is the output of the following code?

int c=1;

while(c)

{

printf("Hello");

c--;

if(!c) printf("KITSW");

else printf("END");

}

• Hello infinite times printed

• HelloKITSW

• HelloKITSWEND

• Hello

  KITSW

  END

What is the output of the following nested for loop?

int i, j;

for(i=0;i<4;++i)

{

for(j=i;j<=i;j++)

{

printf("%d %d\n", j, i);

if(j==2) break;

}

}

• 1

  2

  3

  4

• 0 0

  1 1

  3 3

  4 4

• 0 1

  1 0

  1 1

  3 3

• 0 0

  1 1

  2 2

  3 3

struct {

    short s[5];

    union {

         float y;

         long z;

    }u;

} t;

Assume that the data types short, float and long occupy 2 bytes, 4 bytes and 8 bytes, respectively. The memory requirement for variable t, ignoring alignment considerations, is _________bytes.

Which of the following is not a storage class specifier in C?

• auto

• register

• extern

• static

• volatile

What will be the output of the following C code?

1. 
   #include <stdio.h>

2. int main()

3. {

4. foo();

5. foo();

6. }

7. void foo()

8. {

9. int i = 11;

10. printf("%d ", i);

11. static int j = 12;

12. j = j + 1;

13. printf("%d\n", j);

14. }

• 11 12 11 12

• 11 13 11 14

• 11 12 11 13

• Compile time error

1. struct node

2. {

   int i;

   float j;

   };

   struct node *s[10];

   The above C declaration defines.........

• 1. An array, each element of which is a structure of type node

• 1. A structure of 2 fields, each field being a pointer to an array of 10 elements

• 1. An array, each element of which is pointer to a structure of type node

• 1. A structure of 3 fields: an integer, a float, and an array of 10 elements

1. What does the given program print?

2. char c[ ] = “GATE2023”

   char *p = c;

   printf (“%s”, p + p[3] – p[1]);

• 1. GATE 2023

• 2023

• E2023

• Compilation Error

What will be the output of the following code?

#include<stdio.h>

#include<string.h>

void main() {

char str1[20] = "hello", str2[20] = "world";

printf("%s", strcpy(str2, strcat(str1, str2)));

}

• helloworld

• hello

• world

• worldhello