// ²òÅú4.1 strsize.c
#include <stdio.h>
#include <stdlib.h>

struct person {
    char firstname[20];
    char lastname[20];
    int  score[2];
    float ratio;
};

struct person p,q;

int main() {
    void *base = (void*)&p;
    printf("off(firstname)=%d\n", (void*)&(p.firstname)-base);
    printf("off(lastname )=%d\n", (void*)&(p.lastname )-base);
    printf("off(score[0] )=%d\n", (void*)&(p.score[0] )-base);
    printf("off(score[1] )=%d\n", (void*)&(p.score[1] )-base);
    printf("off(ratio    )=%d\n", (void*)&(p.ratio    )-base);
    printf("total         =%d\n", (void*)&q - base);
}