Single Dimensional Array - Quiz

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 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.

Size of the array need not be specified, when

  • AInitialization is a part of definition
  • BIt is a declaratrion
  • CIt is a formal parameter
  • DAll of these

Consider the following type definition. 

typedef char x[10];
x myArray[5];
What will sizeof(myArray) be ? (Assume one character occupies 1 byte)

  • A15
  • B10
  • C50
  • D30

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 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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