Different Pointer Arithmetic Results when Taking Address of Array

Question

Program:

#include

int main(void) {
    int x[4];
    printf(\"%p\\n\", x);
    printf(\"%p\\n\", x + 1);
    printf(\"%p\\n\", &x);
    p         


        

Answer 1

In case 4 you get 0x100 + sizeof x and sizeof x is 4 * sizeof int = 4 * 4 = 16 = 0x10.

(On your system, sizeof int is 4).