Prints data sizes

sizes.c

#include <stdio.h>

#define print_size(t) printf("sizeof(%s) = %zu\n", #t, sizeof(t))

int main(void) {
    print_size(char);
    print_size(short);
    print_size(int);
    print_size(long);
    print_size(long long);
    print_size(char *);
    print_size(void *);
    return 0;
}