SIZEOF implementation in C

// Program to implement sizeof operator

#include <stdio.h>
#define my_sizeof(type) (char *)(&type + 1)-(char *)(&type)

int main(){
    char x;
    printf("%d %d \n",(char *)(&x + 1), (char *)(&x));
    printf("%d", my_sizeof(x));
    getchar();
    return 0;
}