问题相关代码，请勿粘贴截图
#include
#include
using namespace std;
static int n=0;
struct List{
string name{};
long long date{};
List *next;
};
void CreatList(List *L){
L=new List;
L->next=nullptr;
}
void InputSList(List *L){
List r;
cout<<"请输入您要输入的学生数量的总数：";
cin>>n;
cout<<"请输入学生的姓名和学号"<<endl;
for(int i=0;i<n;i++) {
r=new List;
/*e = new List;
e->next=nullptr;/
cin >>r->name>>r->date;
/r->next=e; r->next=L->next;L->next=r;
r=r->next;/
r->next=L->next;
L->next=r;
}
cout<<"输入完成"<<endl;
}
void InsertList(List *L,int size){
List *e,*r;
e=L;
r=new List;
int count=0;
while(e&&size<n&&count!=size){
e=e->next;
count++;
}
if((count==size)&&size<n) {
cout << "请输入该学生的姓名和学号:";
cin >> r->name >> r->date;
r->next=e->next;
e->next=r;
cout<<"插入成功"<<endl;
}
}
void influenceList(List *L,int size){
List *e;
int c=0;
e=L;
int count=0;
while(e&&size<n&&count!=size){
e=e->next;
count++;
}
if((count==size)&&size<n) {
cout<<"你要修改的学生信息:"<name<<" "<date<<endl;
cout <<"请输入您想改变的信息"<<endl;
cout<<"1.姓名"<<endl<<"2.学号"<<endl;
cin>>c;
switch (c) {
case 1:
cin>>e->name;
case 2:
cin>>e->date;
default:
cout<<"您输入的有误,系统自动退出"<<endl;
break;
}
cout<<"修改成功"<<endl;
}
}
void deleteList(List *L,int size){
List *e,*r;
e=L;
r=new List;
int count=0;
while(e&&size<n&&count!=size){
e=e->next;
count++;
}
r=e;
e=e->next;
r->next=e->next;
delete e;
cout<<"已成功删除该学生信息"<<endl;
}
void showList(List *L){
List *e;
e=L;
while(e){
e=e->next;
cout<<"学生姓名:"<name<<"学号："<date;
}
cout<<"所有学生均如上列"<<endl;
}
int main(){
List *L;
CreatList(L);
cout<<"欢迎进入学生信息管理系统"<<endl;
cout<<"请选择您要执行的功能"<<endl;
cout<<"1.创建学生班级"<<endl;
cout<<"2.添加学生信息"<<endl;
cout<<"3.修改学生信息"<<endl;
cout<<"4.删除学生信息"<<endl;
cout<<"5.查看学生信息"<<endl;
int a{};int size{};
cin>>a;
switch (a) {
case 1:
InputSList(L);
break;
case 2:
cout<<"请输入您要插入的序号"<<endl;
cin>>size;
InsertList(L,size);
break;
case 3:
cout<<"请输入您要修改学生的序号"<<endl;
cin>>size;
influenceList(L,size);
break;
case 4:
cout<<"请输入您要删除学生的序号"<<endl;
cin>>size;
deleteList(L,size);
break;
case 5:
cout<<"输出全部信息，如下："<<endl;
showList(L);
break;
}
}
运行结果及报错内容
输了一次之后就完全崩掉了
我想要达到的结果
正确输入学生信息
