#include<stdio.h>
struct birthday{
    int year;
    int month;
    int day;
};
struct address{
    char city;
    char street;
    int code;
};
struct friends{
    char name[10];
    struct birthday date;
    char telephone[13];
    struct address addr;
};

int main(){
    int i, j, max;
    struct friends f[5], e;                                            //5个人的小通讯名单
   
    for(i=0; i<5; i++){
        printf("输入第%d个朋友的信息：\n", i+1);
        scanf("%s%d%d%d%s%s%s%d", &f[i].name, &f[i].date.year, &f[i].date.month, &f[i].date.day,
                                  &f[i].telephone, &f[i].addr.city, &f[i].addr.street, &f[i].addr.code);
    }
    for(i=0; i<5; i++)
        printf("%s  %d-%d-%d\n%s\n%s  %s  %d", f[i].name, f[i].date.year, f[i].date.month, f[i].date.day,
                                  f[i].telephone, f[i].addr.city, f[i].addr.street, f[i].addr.code);
   
}辛辛苦苦输完数据打算测试程序跑的怎样的，一直报错，是哪里的问题呢？？？

输入格式处理问题，这样改试试~
struct address{
    char city[10];
    char street[10];
    int code;
};

哦哦，对的，只顾看主程序有什么问题呢，忘了检查结构定义，谢了