程序代码：

#include<stdio.h>
struct per{
    char fth_name[15];
    char mid_name[15];
    char lst_name[15];
};
struct info{
    int num;
    struct per name;
    
};
void show(const struct info *);
int main(void)
{
    struct info peo_info[5];
    int n=0;
    puts("please the infomation about the first people");
    while(n<5)
    {
        puts("enter the first name:");
        gets(peo_info[n].name.fth_name);
        puts("enter the middle name(if you don't have a mid name,enter an empty line at the begin of the line)");
        gets(peo_info[n].name.mid_name);
        puts("enter the last name");
        gets(peo_info[n].name.lst_name);
        puts("please the infomation about the next people");
        while(getchar()!='\n')
        {
            continue;
        }
        scanf("%d",peo_info[n].num);
        n++;

    }
}

scanf("%d",peo_info[n].num);