Sizeof a c structure. C結構的大小.

Structure 會把char不足的部分, 補足到4 bytes .

#include <stdlib.h>
#include <stdio.h>

struct people{
    char name;
    int id;
};

int main(void ){

     printf("%d\n" , sizeof(struct people));
    printf("%d\n" , sizeof(char));
    printf("%d\n" , sizeof(int));
    return 0;
}