Single Dimensional Array - Quiz

What is right way to Initialize array?

  • Aint num[6] = { 2, 4, 12, 5, 45, 5 };
  • Bint n{} = { 2, 4, 12, 5, 45, 5 };
  • Cint n{6} = { 2, 4, 12 };
  • Dint n(6) = { 2, 4, 12, 5, 45, 5 };

What will be the output of the program ? 

#include<stdio.h>
void 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);
}

  • A3, 2, 15
  • B2, 3, 20
  • C2, 1, 15
  • D1, 2, 5

What will be the output of following program code? 

#include <stdio.h>
int main(void)
{
    char p;
    char buf[10] = {1, 2, 3, 4, 5, 6, 9, 8};
    p = (buf + 1)[5];
    printf("%d", p);
    return 0;
}

  • A5
  • B9
  • C6
  • Derror

What is the maximum number of dimensions an array in C may have?

  • A2
  • B10
  • C20
  • DTheoratically no limit. The only practical limits are memory size and compilers.

What will be the output of the following program? 

void main()
{
      char str1[] = "abcd";
      char str2[] = "abcd";
      if(str1==str2)
            printf("Equal");
      else
            printf("Unequal");
}

  • AEqual
  • BUnequal
  • CError
  • DNone of these.

What will be the output of the following code? 

void main()
{
      int a[10];
      printf("%d %d", a[-1], a[12]);
}

  • A0 0
  • BGarbage value 0
  • C0 Garbage Value
  • DGarbage vlaue Garbage Value

What will be the output of the program if the array begins at 65472 and each integer occupies 2 bytes? 

#include
void main()
{
    int a[3][4] = {1, 2, 3, 4, 4, 3, 2, 1, 7, 8, 9, 0};
    printf("%u, %u", a+1, &a+1);
}

  • A65474, 65488
  • B65480, 65488
  • C65480, 65496
  • D 65474, 65476

What will be the output of the program if the array begins at address 65486? 

#include<stdio.h>
void main()
{
    int arr[] = {12, 14, 15, 23, 45};
    printf("%u, %u", arr, &arr);
}

  • A65486, 65488
  • B65486, 65490
  • C65486, 65487
  • D65486, 65486

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 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.

  • A1
  • B1, 4
  • C2, 3
  • D2, 4

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