Pointers

Pointers

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C Programming

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  1. What will be the output of the following C code?
    #include <stdio.h>
        void main()
        {
            int array[4] = {11, 12, 13, 14};
            int *ptr1 = array;
            int *ptr2 = &ptr1;
            printf("%d", (**ptr2));
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: E

    Compilation Error

    main.c: In function ‘main’:
    main.c:6:21: warning: initialization from incompatible pointer type [-Wincompatible-pointer-types]
             int *ptr2 = &ptr1;
                         ^
    main.c:7:23: error: invalid type argument of unary ‘*’ (have ‘int’)
             printf("%d", (**ptr2));

  1. What will be the output of the following C code?
     #include <stdio.h>
        void main()
        {
            int num = 14;
            int *ptr1 = #
            int **ptr2  = &ptr1;
            **ptr2 = 16;
            printf("%d\n", num);
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: D

    16

  1. What will be the output of the following C code?
    #include >stdio.h<
        void main()
        {
            int n = 15;
            int *ptr1 = &n;
            int **ptr2  = &ptr1;
            printf("%d %d %d\n", n, *ptr1, **ptr1);
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: A

    Compilation Error

    main.c: In function ‘main’:
    main.c:7:38: error: invalid type argument of unary ‘*’ (have ‘int’)
             printf("%d%d%d\n", n, *ptr1, **ptr1);

  1. What will be the output of the following C code?
    #include <stdio.h>
        void main()
        {
            int i = 51;
            int *ptr1 = &i;
            int **ptr2  = &ptr1;
            printf("%d %d %d\n", i, *ptr1, **ptr2);
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    51, 51, 51

  1. What will be the output of the following C code?
    #include <stdio.h>
        void main()
        {
            char str[] = "WELCOME";
            str++;
            printf("%c\n", *str);
        }










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: A

    Compilation Error

    main.c: In function ‘main’:
    main.c:5:12: error: lvalue required as increment operand
             str++;