Quiz on Array And Pointer

1 What is the output of the following program?

#include <stdio.h>

void foo(int a[])

{

a[0]=10;

printf("%d",a[0]);

return ;

}

int main()

{

int a[]={1,2,3};

foo(a);

printf("%d",a[0]);

return 0;

}

 11

 101

 1010

 110

1 point

ans 1010

2 What is the output of the following program?

#include<stdio.h>

int main()

{

    int size, i;

    size=5;

    int arr[size]={1,2,3,4,5};

    for(i=1; i<=size;i++)

    {

        printf("%d", arr[i]);

    }

    return 0;

}

 12345

 2345

 23456

 None of These

1 point

ans. none of these

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

 Value of elements in array

 First element of the array

 Base address of the array

 Address of the last element of array

1 point

ans . base address of array

4 What will be output if you will execute following c code?

#include<stdio.h>

void main(){

    char arr[16]="The African Queen";

    printf("%s",arr);

}

 The African Queen

 The African Quee

 he African Queen

 Error

1 point

ans. error

5 What is the valid statement that you can make about the output of the following code?

#include<stdio.h>

void fun(int * a)

{

      int ** x=&a;

      printf("%u\n",x);

      return ;

}

int main(){

    int a[5]={1,2,3,4,5};

    int * b = a;

    int ** y=&b;

    printf("%u\n",y);

    fun(b);

    return 0;  

}

 Both the printed values are necessarily the same

 Both the printed values are necessarily different

 Both the printed values may be same

 None of these

1 point

ans. both the printed values may be same

6 What will be output if you will execute following C code?

#include<stdio.h>

void main(){

    char arr[20]="MysticRiver";

    printf("%d",sizeof(arr));   

}

 11

 20

 44

 80

1 point

ans.20

7 What is the output of the following code?

#include<stdio.h>

int main()

{

    int a[5] = {5, 1, 15, 20, 25};

    int i, j, m;

    i = ++a[1];

    j = a[1]++;

    m = a[i++];

    printf("%d, %d, %d", i, j, m);

    return 0;

}

 2 2 15

 3 2 20

 3 1 20

 3 2 15

1 point

ans. 3 2 15

8 Which of the following are correct ways to initialize an array? (There may be multiple answers.)

 int num[]={1,2,3,4};

 int num{}={1,2,3,4};

 int num[4]={1,2,3,4};

 int num()={1,2,3,4};

1 point

ans. A&C

9 What will be the output of the following program?

#include<stdio.h>

int main(){

   int a = 330;

   char *p;

   p =( char *)&a;

   printf("%d ",*p);

   return 0;

}

 330

 74

 54

 331

ans 74

1 point