问题遇到的现象和发生背景
问题相关代码,请勿粘贴截图
运行结果及报错内容
我的解答思路和尝试过的方法
我想要达到的结果
//#include <iostream>
//
//int main() {
// std::cout << "Hello, World!" << std::endl;
// return 0;
//}
#include<iostream>
#include<string>
#include<string.h>
#include<stdio.h>
#include<stdlib.h>
using namespace std;
int k=1;
typedef struct {
string name = {};
string no;//学号
string xb;
int age;
long long birth;//出生年月
string add;//地址
long long phone;//电话
string email;//电子邮箱
} student;
typedef struct lnode {//链表的定义
student data; //存放学生信息的数据域
struct lnode *next = 0;// 指向下个学生信息的指针域
} lnode, *linklist;
void initlist(linklist &l) {//初始化链表
l = new lnode;
l->next = NULL;
}
void help() { //帮助
printf("\n 0.欢迎使用系统帮助!\n");
printf("\n 1.初次进入系统后,请先选择增加学生信息;\n");
printf("\n 2.按照菜单提示键入数字代号;\n");
printf("\n 3.增加学生信息后,切记保存;\n");
printf("\n 4.谢谢您的使用!\n");
system("pause");
system("cls");
}
void sort(linklist &l)//对学号排序
{
lnode *p, *k;
p = l->next;
string s1;
int a;
long long b;
while(p){
k=p;
while (k->next != NULL) {
k = k->next;
if (p->data.no > k->data.no) {
s1 = p->data.name;
p->data.name = k->data.name;
k->data.name = s1;
s1 = p->data.no;
p->data.no = k->data.no;
k->data.no = s1;
s1 = p->data.xb;
p->data.xb = k->data.xb;
k->data.xb = s1;
a = p->data.age;
p->data.age = k->data.age;
k->data.age = a;
b = p->data.birth;
p->data.birth = k->data.birth;
k->data.birth = b;
b = p->data.phone;
p->data.phone = k->data.phone;
k->data.phone = b;
s1 = p->data.add;
p->data.add = k->data.add;
k->data.add = s1;
s1 = p->data.email;
p->data.email = k->data.email;
k->data.email = s1;
}
}
p = p->next;
}
}
//void creatllist(linklist &l){
// lnode *p,*r;
// r=l;
// p->next=NULL;
// r->next=p;
// r=p;
//}
int totallist(linklist &l){//学生总数
lnode *p;
p=l->next;
int i=0;
while(p){
i++;
p=p->next;
}
return i;
}
void insertlist(linklist &l){//指定位置插入学生信息
int length=totallist(l),n;
lnode *p;
p=l;
int j=0;
while(p&&j<length){
p=p->next;
j++;
}
if(p){
cout<<"请输入增加学生个数:"<<endl;
cin>>n;
for (int i = 0; i < n; i++) {
p=p->next;
cout << "请输入第" << i + 1 << "个学生的学号" << endl;
cin >> p->data.no;
cout << "请输入第" << i + 1 << "个学生的姓名" << endl;
cin >> p->data.name;
cout << "请输入第" << i + 1 << "个学生的年龄" << endl;
cin >> p->data.age;
cout << "请输入第" << i + 1 << "个学生的性别" << endl;
cin >> p->data.xb;
cout << "请输入第" << i + 1 << "个学生的出生年月" << endl;
cin >> p->data.birth;
cout << "请输入第" << i + 1 << "个学生的地址" << endl;
cin >> p->data.add;
cout << "请输入第" << i + 1 << "个学生的电话" << endl;
cin >> p->data.phone;
cout << "请输入第" << i + 1 << "个学生的email" << endl;
cin >> p->data.email;
}
p->next=NULL;
}
else
cout<<"插入失败"<<endl;
sort(l);
}
/*
void insert(linklist &l) {//输入
lnode *p;
r = l;
int n;
cout<<"请输入增加学生个数:"<<endl;
cin>>n;
for (int i = 0; i < n; i++) {
p = new lnode;
cout << "请输入第" << i + 1 << "个学生的学号" << endl;
cin >> p->data.no;
cout << "请输入第" << i + 1 << "个学生的姓名" << endl;
cin >> p->data.name;
cout << "请输入第" << i + 1 << "个学生的年龄" << endl;
cin >> p->data.age;
cout << "请输入第" << i + 1 << "个学生的性别" << endl;
cin >> p->data.xb;
cout << "请输入第" << i + 1 << "个学生的出生年月" << endl;
cin >> p->data.birth;
cout << "请输入第" << i + 1 << "个学生的地址" << endl;
cin >> p->data.add;
cout << "请输入第" << i + 1 << "个学生的电话" << endl;
cin >> p->data.phone;
cout << "请输入第" << i + 1 << "个学生的email" << endl;
cin >> p->data.email;
p->next = NULL;
r->next = p;
r = p;
}
sort(l);
}
*/
void refresh() { //刷新界面
printf(" 刷新完毕!!!");
system("pause");
system("cls");
}
void showlist(linklist &l){//展示所有学生信息
lnode *p;
p=l->next;
int j=1;
while(p){
cout<<"第"<<j<<"个学生的姓名为:"<<p->data.name;
cout<<"\n学号为:"<<p->data.no;
cout<<"\n性别为:"<<p->data.xb;
cout<<"\n年龄为:"<<p->data.age;
cout<<"\n出生年月为:"<<p->data.birth;
cout<<"\n地址为:"<<p->data.add;
cout<<"\n电话为:"<<p->data.phone;
cout<<"\n电子邮箱为:"<<p->data.email;
j++;
p=p->next;
}
}
void findlist_name(linklist &l){//根据学生姓名查找
lnode *p;
p=l->next;
cout<<"请输入你想要查询学生的姓名:"<<endl;
string name;
cin>>name;
while(p&&p->data.name!=name){
p=p->next;
}
if(p){
cout<<"此学生姓名为:"<<p->data.name;
cout<<"\n学号为:"<<p->data.no;
cout<<"\n性别为:"<<p->data.xb;
cout<<"\n年龄为:"<<p->data.age;
cout<<"\n出生年月为:"<<p->data.birth;
cout<<"\n地址为:"<<p->data.add;
cout<<"\n电话为:"<<p->data.phone;
cout<<"\n电子邮箱为:"<<p->data.email;
}
if(!p)
cout<<"查无此人"<<endl;
}
void findlist_no(linklist &l){//根据学生学号查找
lnode *p;
p=l->next;
cout<<"请输入你想要查询学生的学号:"<<endl;
string no;
cin>>no;
while(p&&p->data.no!=no){
p=p->next;
}
if(p){
cout<<"此学生姓名为:"<<p->data.name;
cout<<"\n学号为:"<<p->data.no;
cout<<"\n性别为:"<<p->data.xb;
cout<<"\n年龄为:"<<p->data.age;
cout<<"\n出生年月为:"<<p->data.birth;
cout<<"\n地址为:"<<p->data.add;
cout<<"\n电话为:"<<p->data.phone;
cout<<"\n电子邮箱为:"<<p->data.email;
}
if(!p)
cout<<"查无此人"<<endl;
}
void sortsex(linklist &l) {//根据学生性别分类排序
lnode *p;
p = l->next;
int j;
while (p) {
j = 1;
if (p->data.xb == "男") {
cout << "第" << j << "个男性学生的姓名为:" << p->data.name;
cout << "\n学号为:" << p->data.no;
cout << "\n性别为:" << p->data.xb;
cout << "\n年龄为:" << p->data.age;
cout << "\n出生年月为:" << p->data.birth;
cout << "\n地址为:" << p->data.add;
cout << "\n电话为:" << p->data.phone;
cout << "\n电子邮箱为:" << p->data.email;
j++;
p = p->next;
}
while (p) {
j = 1;
if (p->data.xb == "女") {
cout << "第" << j << "个女性学生的姓名为:" << p->data.name;
cout << "\n学号为:" << p->data.no;
cout << "\n性别为:" << p->data.xb;
cout << "\n年龄为:" << p->data.age;
cout << "\n出生年月为:" << p->data.birth;
cout << "\n地址为:" << p->data.add;
cout << "\n电话为:" << p->data.phone;
cout << "\n电子邮箱为:" << p->data.email;
j++;
p = p->next;
}
}
}
}
void sortage(linklist &l){//根据学生年龄分类统计
int ag[100]={0};
lnode *p;
p=l->next;
while(p){
ag[p->data.age]++;
p=p->next;
}
for(int age=1; age<100; age++){
p=l->next;
int j=1;
while(p){
if(ag[age]!=0){
p=p->next;
cout << "第" << j << "个年龄为ag[age]的学生的姓名为:" << p->data.name;
cout << "\n学号为:" << p->data.no;
cout << "\n性别为:" << p->data.xb;
cout << "\n年龄为:" << p->data.age;
cout << "\n出生年月为:" << p->data.birth;
cout << "\n地址为:" << p->data.add;
cout << "\n电话为:" << p->data.phone;
cout << "\n电子邮箱为:" << p->data.email;
j++;
}
}
}
}
void modify(linklist &l) { //修改信息
lnode *p;
p=l->next;
int item,num=0;
string name = {};
string no{};//学号
string xb;
int age;
long long birth;//出生年月
string add;//地址
long long phone;//电话
string email;//电子邮箱
printf("请输入要修改的学生的学号:\n");
cin>>no;
while(p) {
if(p->data.no==no) { //比较字符串是否相等
num=1;
break;
}
p=p->next;
}
if(num) {
printf(" ----------------------------\n");
printf(" ---------1.修改姓名---------\n");
printf(" ---------2.修改年龄---------\n");
printf(" ---------3.修改性别---------\n");
printf(" ---------4.修改生日---------\n");
printf(" ---------5.修改地址---------\n");
printf(" ---------6.修改电话---------\n");
printf(" ---------7.修改邮箱---------\n");
printf(" ---------8.退出本菜单-------\n");
printf(" ----------------------------\n");
while(1) {
printf(" 请选择子菜单编号:");
scanf("%d",&item);
switch(item) {
case 1:
printf(" 请输入新的姓名:\n");
cin>>name;
p->data.name=name;
break;
case 2:
printf(" 请输入新的年龄:\n");
cin>>age;
p->data.age=age;
break;
case 3:
printf(" 请输入新的性别:\n");
cin>>xb;
p->data.xb=xb;
case 4:
printf(" 请输入新的生日:\n");
cin>>birth;
p->data.birth=birth;
break;
case 5:
printf(" 请输入新的地址:\n");
cin>>add;
p->data.add=add;
break;
case 6:
printf(" 请输入新的电话:\n");
cin>>phone;
p->data.phone=phone;
break;
case 7:
printf(" 请输入新的邮箱:\n");
cin>>email;
p->data.email=email;
break;
case 8:
system("cls");
return;
default:
printf(" 请在1-8之间选择\n");
}
}
} else {
printf(" 该学生不存在,请重新输入:\n");
}
}
void deletelist(linklist &l){//删除某学生信息
string s1;
cout<<"请输入你想删除学生的姓名:"<<endl;
cin>>s1;
lnode *p,*q;
p=l;
while(p->next!=NULL){
q=p->next;
if(q->data.no==s1){
if(q->next!=NULL){
p->next = q->next;
delete q;
}
else{
delete q;
p->next = NULL;
}
}
}
sort(l);
cout<<"查无此人"<<endl;
}
void preserve(linklist &l) { //将学生信息保存到文件中
FILE * fpreserve;
char ch='\n';
lnode *p;
p=l->next;
}
/*
void writeFile(LinkList head) {
FILE *outf;
pNode p = head->next;
if((outf = fopen("data.txt","wt")) == NULL) {
printf("不能打开数据文件。\n");
exit(1);
}
while(p) {
fwrite(p,sizeof(Node),1,outf);
p = p->next;
}
fclose(outf);
}
int i;
fpreserve=fopen("StudentInformation.txt","wt+");
fprintf(fpreserve,"学生学号 学生姓名 年龄 性别 出生年月 地址 手机号码 email %c",ch);
for(i=0; i<n; i++) {
fprintf(fpreserve,"%6s %7s %6d %6s %6s %6s %6s %6s %c",stu[i].code,stu[i].name,stu[i].age,stu[i].sex,stu[i].chushen,stu[i].dizhi,stu[i].phone,stu[i].email,ch);
}
system("cls");
printf(" \n\n\n\n\n\n\n\n\n\n\n 保存完毕!!!\n");
system("pause");
system("cls");
fclose(fpreserve);
}
*/
void menu(linklist &l) { //学生信息管理系统界面
int num;
printf(" \n\n \n\n");
system("cls");
printf(" ******************************************************\n\n");
printf(" * 学生信息管理系统 *\n \n");
printf(" ******************************************************\n\n");
printf(" *********************系统功能菜单************************* \n");
printf(" ---------------------- ---------------------- \n");
printf(" ********************************************* \n");
printf(" * 0.系统帮助及说明 * * 1.刷新学生信息 * \n");
printf(" ********************************************* \n");
printf(" * 2.查询学生信息 * * 3.修改学生信息 * \n");
printf(" ********************************************* \n");
printf(" * 4.增加学生信息 * * 5.按学号删除信息 * \n");
printf(" ********************************************* \n");
printf(" * 6.显示当前信息 * * 7.保存当前学生信息* \n");
printf(" ********************** ********************** \n");
printf(" * 8.排序分类信息 * * 9.退出系统 * \n");
printf(" ********************** ********************** \n");
printf(" ---------------------- ---------------------- \n");
printf(" 请选择菜单编号:");
scanf("%d",&num);
switch(num) {
case 0:
system("cls");
help();
break;
case 1:
system("cls");
refresh();
break;
case 2:
int i;
system("cls");
printf("\n\n\n\n\n\n\n\n\n\n");
printf(" ----------------------\n");
printf(" -----1.按学号查询-----\n");
printf(" -----2.按姓名查询-----\n");
printf(" -----3.退出本菜单-----\n");
printf(" ----------------------\n");
cin>>i;
switch (i) {
case 1:
findlist_no(l);break;
break;
case 2:
findlist_name(l);break;
case 3:
system("cls");
return;
}
break;
case 3:
system("cls");
modify(l);
break;
case 4:
system("cls");
insertlist(l);
break;
case 5:
system("cls");
deletelist(l);
break;
case 6:
system("cls");
showlist(l);
break;
// case 7:
// system("cls");
// preserve();
// break;
case 8:
system("cls");
printf(" -------------------------------------------------------------------------------------\n");
printf(" ------------------------1.按性别分类排序-----------------------\n");
printf(" ------------------------2.按年龄分类统计-----------------------\n");
printf(" ------------------------3.退出本菜单 -----------------------\n");
printf(" -------------------------------------------------------------------------------------\n");
cin>>i;
switch (i) {
case 1:
sortsex(l);break;
break;
case 2:
sortage(l);break;
case 3:
system("cls");
return;
}
break;
case 9:
system("cls");
k=0;
break;
default:
printf(" 请在0-9之间选择\n");
}
}
int main(){
linklist l;
initlist(l);
//creatllist(l);
while(k){
menu(l);
}
system("pause");
return 0;
}
这个程序总报错 不知道什么问题555 明天就要答辩了 哥快帮我看眼 随便指点一下也行 我是真看不出来哪里有问题orz orz orz orz