C | Pointer Basics | Question 17

#include <stdio.h>
void f(char**);
int main()
{
    char *argv[] = { "ab", "cd", "ef", "gh", "ij", "kl" };
    f(argv);
    return 0;
}
void f(char **p)
{
    char *t;
    t = (p += sizeof(int))[-1];
    printf("%s\n", t);
}

(A) ab
(B) cd
(C) ef
(D) gh

Answer: (D)
Explanation: argv is a pointer array of type char. So it contains character pointers like ab, cd, etc. f(argv) in this call we give address of the first char pointer ab. in function f , t = ( argv[0] += 4 (its size of int) [-1] . after this evaluation t points to ij but after [-1] t will point to gh.
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