Struct Padding

Code

#include <stdio.h>

typedef struct {
    char a;
    int b;
    short c;
} MyStruct;

void print_offsets() {
    MyStruct s;
    MyStruct *ptr = &s;

    printf("Offset of a: %u\n", ((char*) & (ptr->a)) - ((char*) & (ptr->a)));
    printf("Offset of b: %u\n", ((char*) & (ptr->b)) - ((char*) & (ptr->a)));
    printf("Offset of c: %u\n", ((char*) & (ptr->c)) - ((char*) & (ptr->a)));
    printf("Size: %u", sizeof(s));
}

int main() {
    print_offsets();
    return 0;
}