Array in C Language - Quiz

An array elements are always stored in ________ memory locations.

  • ASequential
  • BRandom
  • CSequential and Random
  • DNone of the above

let x be an array. Which of the following operations is illegal? 
I.   ++x
II. x+1
III. x++
IV. x*2

  • AI and II
  • BI, II and III
  • CII and III
  • DI, III and IV

What will be printed after execution of the following code? 

void main()
{
      int arr[10] = {1,2,3,4,5};
      printf("%d", arr[5]);
}

  • AGarbage Value
  • B5
  • C6

What does the following declaration mean? int (*ptr)[10];

  • Aptr is array of pointers to 10 integers
  • Bptr is a pointer to an array of 10 integers
  • Cptr is an array of 10 integers
  • Dptr is an pointer to array

Array passed as an argument to a function is interpreted as

  • AAddress of the array.
  • BValues of the first elements of the array.
  • CAddress of the first element of the array.
  • DNumber of element of the array.

What will be the output of the program? 

#include<stdio.h>
void main()
{
    float arr[] = {12.4, 2.3, 4.5, 6.7};
    printf("%d", sizeof(arr)/sizeof(arr[0]));
}

  • A5
  • B4
  • C6
  • Dno output

Which of the following is correct way to define the function fun() in the below program? 

#include<stdio.h>
void main()
{
    int a[3][4];
    fun(a);
}

  • Avoid fun(int p[][4]){}
  • Bvoid fun(int *p[4]){}
  • Cvoid fun(int *p[][4]){}
  • Dvoid fun(int *p[3][4]){}

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

#include<stdio.h>
void main()
{
    int size, i;
    scanf("%d", &size);
    int arr[size];
    for(i=1; i<=size; i++)
    {
        scanf("%d", arr[i]);
        printf("%d", arr[i]);
    }
}

  • AThe code is erroneous since the statement declaring array is invalid.
  • BThe code is erroneous since the subscript for array used in for loop is in the range 1 to size.
  • C The code is correct and runs successfully.
  • DThe code is erroneous since the values of array are getting scanned through the loop.

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

  • Ascanf()
  • Bgets()
  • Cprintf()
  • Dputs()

Which of the following correctly accesses the seventh element stored in arr, an array with 100 elements?

  • Aarr[6]
  • Barr[7]
  • C arr{6}
  • Darr{7}

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