结构中成员的内存位置

struct Person {
    char name[20];
    int age;
    float height;
};

#include <stddef.h>

int main() {
    size_t nameOffset = offsetof(struct Person, name);
    size_t ageOffset = offsetof(struct Person, age);
    size_t heightOffset = offsetof(struct Person, height);
    
    // 输出成员的偏移量
    printf("name offset: %zu\n", nameOffset);
    printf("age offset: %zu\n", ageOffset);
    printf("height offset: %zu\n", heightOffset);
    
    return 0;
}

name offset: 0
age offset: 20
height offset: 24