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分享45.obj : error LNK2001: unresolved external symbol "protected: int __thiscall st
#include<iostream.h>
#include<string.h>
#include<fstream.h>
#include<iomanip.h>
class student
{
protected:
int number; //学号
int pwd; //
char name[20]; //姓名
char sex[6]; //性别
char place[20]; //籍贯
char nation[6]; //民族
char birth[20]; //出生日期
int find(student **p,int num,char department,char classname,char name,char*pn="^");
char party[10]; //政治面貌
char id[20]; //身份证号
char classname[20]; //班级名称
char telnumber[20];
char department[20]; //学院名称
float score[3]; //成绩
public:
student *next;
student(){ }
~student(){ }
char* getname(){ return name; }
char* getclassname(){return classname;}
char* getdepartment(){return department;}
int getnumber(){ return number;}
int getpwd(){return pwd;}
float getscore(int i) { return score[i];}
float getg(){ return (score[0]+score[1]+score[2]); }
//录入信息
void input()
{
int e=1;
cout<<"按提示输入:"<<endl;
cout<<"请输入学院名称:"<<endl;
cin>>department;
cout<<"请输入班级："<<endl;
cin>>classname;
cout<<"请输入编号: ";
cin>>number;
cout<<"请输入姓名: ";
cin>>name;
do
{
cout<<"请输入性别: ";
cin>>sex;
if(strcmp(sex,"男")==0 || strcmp(sex,"女")==0)
{
cout<<"请输入电话号码:";
cin>>telnumber;
cout<<"请输入籍贯: ";
cin>>place;
cout<<"请输入民族: ";
cin>>nation;
cout<<"请输入生日: ";
cin>>birth;
cout<<"请输入政治面貌: ";
cin>>party;
cout<<"请输入身份证号: ";
cin>>id;
cout<<"请输入数学分数: ";
cin>>score[0];
cout<<"请输入英语分数: ";
cin>>score[1];
cout<<"请输入计算机分数: ";
cin>>score[2];
e=0;
}
else
{
cout<<"无此类型性别!重新输入!"<<endl;
e=1;
}
}while(e);
return ;
}
void input(ifstream & is)
{
is>>department>>classname>>number>>name>>sex>>telnumber>>place>>nation>>birth>>party>>id
>>score[0]>>score[1]>>score[2];
is.get();
}
//密码
void password()
{
int i=0;
int pwd,key=123456; //假设密码为123456
do
{
if(i!=0)
cout<<"密码错误！"<<endl;
cout<<"第"<<i+1<<"次输入密码:";
cin>>pwd;
}while(pwd!=key&&++i<3);
if (i==3)
cout<<"密码错误，三次机会已经用完！"<<endl<<"拒绝修改信息！"<<endl;
else
cout<<"请选择1或2来修改信息。"<<endl;
}
//xiugai
void domend()
{student *p;
int num=-1,n;
char name[20];
char classname[20];
char department[20];
do
{cout<<"1:按编号修改,2:按姓名修改: ";
cin>>n;
}while(n<1||n>2);
if(n==1)
{
cout<<"请输入编号: ";
cin>>num;
}
if(n==2)
{
cout<<"请输入姓名: ";
cin>>name;
}
if( !find(&p,num,name[20],department[20],classname[20]) )
{
cout<<"SORRY!找不到你要修改的内容!"<<endl;
return;
}
}
//显示信息
void output()
{
cout<<"学生基本信息如下:"<<endl;
cout<<"学院名称:"<<department<<endl
<<"班级名称:"<<classname<<endl
<<" 编号:"<<number<<endl
<<" 姓名:"<<name<<endl
<<" 性别:"<<sex
<<"电话号码:"<<telnumber
<<" 籍贯:"<<place
<<" 民族:"<<nation
<<" 生日:"<<birth
<<" 政治面貌:"<<party
<<" 身份证号:"<<id<<endl
<<" 数学:"<<score[0]
<<" 英语:"<<score[1]
<<" 计算机:"<<score[2]
<<" 总分:"<<getg()<<endl<<endl;
}
void output(ofstream & os)
{
os<<setw(20)<<department
<<setw(20)<<classname
<<setw(6)<<number
<<setw(15)<<name
<<setw(6)<<sex
<<setw(20)<<telnumber
<<setw(20)<<place
<<setw(6)<<nation
<<setw(20)<<birth
<<setw(20)<<party
<<setw(20)<<id
<<setw(6)<<score[0]
<<setw(6)<<score[1]
<<setw(6)<<score[2]<<endl;
}
};
class school
{
public:
school(){ head=new student; head->next=NULL; key=0; }
~school(){ delete head; }
void input(); //录入函数
void mend(); //修改函数
void del(); //删除函数
int find(student **p,int num,char department,char classname,char name,char*pn="^"); //子查找函数
void found(); //查找函数
void show(); //显示函数
void count(); //统计函数
void save(); //保存函数
void begin(); //初始化函数
void clear(); //清空函数
char mainmenu(); //主菜单函数
int getkey(){ return key;}
void setkey(int k){ key=k; }
private:
student *head;
int key;
};
//录入函数
void school::input()
{
student *p,*p2=NULL;
p=head;
int n;
while(p->next)
p=p->next;
while(n)
{
p2=new student;
p2->input();
p->next=p2;
p2->next=NULL;
p=p->next;
school::setkey(1);
cout<<"按1继续,按0返回 : ";
cin>>n;
}
}
//子查找函数
int school::find(student **p1,int num,char department,char classname,char name,char *pn)
{
student *p;
p=head;
while(p->next)
{
(*p1)=p;
if( (p->next)->getnumber()==num||!strcmp( (p->next)->getname(),pn ) )
return 1;
p=p->next;
}
return 0;
}
//查找函数
void school::found()
{
student *p;
int num=-1,n=9;
char department[20];
char classname[20];
char name[20]="^";
do
{
cout<<"1:按学院查找，2：按班级查找3：按编号查找,:4:按姓名查找: ";
cin>>n;
}while(n<1||n>4);
if(n==1)
{
cout<<"请输入学院名称: ";
cin>>department;
}
if(n==2)
{
cout<<"请输入班级: ";
cin>>classname;
}
if(n==3)
{
cout<<"请输入编号:";
cin>>num;
}
if(n==4)
{
cout<<"请输入姓名:";
cin>>name;
}
if(!find(&p,department[20],classname[20],num,name[20]) )
{
cout<<"SORRY!找不到你要查找的内容!"<<endl;
return;
}
(p->next)->output();
}
//删除函数
void school::del()
{
student *p,*p2;
int num;
char name;
char department;
char classname;
cout<<"请输入编号: ";
cin>>num;
if( !find(&p,num,department,classname,name) )
{
cout<<"SORRY!找不到你要删除的内容!"<<endl;
return;
}
(p->next)->output();
p2=p->next;
p->next=p2->next;
delete p2;
school::setkey(1);
}
//显示函数
void school::show()
{
student *p;
p=head;
while(p->next)
{
(p->next)->output();
p=p->next;
}
}
//修改函数
void school::mend()
{
student *p;
{p=head;
while(p->next)
{
(p->next)->password();
(p->next)->domend();
p=p->next;
}
(p->next)->output();
(p->next)->input();
school::setkey(1);
}
}
//保存函数
void school::save()
{
student *p;
p=head;
ofstream os("student.txt",ios::out);
if (school::getkey()==1)
{
while(p->next)
{
(p->next)->output(os);
p=p->next;
}
}
cout<<"文件已保存! "<<endl;
school::setkey(0);
}
//初始化函数
void school::begin()
{
student *p,*p2;
p=head;
clear();
long t;
ifstream is("student.txt",ios::in);
if(!is)
{
ofstream os("student.txt",ios::out);
os.close();
return ;
}
int num=-1;
while(1)
{
num=-1;
t=is.tellg();
is>>num;
is.seekg(t);
if(num<0)
{
is.close();
return;
}
p2=new student;
p2->input(is);
p->next=p2;
p2->next=NULL;
p=p->next;
}
}
//清空函数
void school::clear()
{
student *p,*p2;
p=head->next;
while( p )
{
p2=p;
p=p->next;
delete p2;
}
}
//统计函数
void school::count()
{
student *p;
p=head;
int n=0;
double g[3]={0,0,0};
float j[3]={0,0,0};
while(p->next)
{
p=p->next;
n++;
for(int i=0;i<3;i++)
{
g[i]=g[i]+(p->getscore(i) );
(p->getscore(i) )>=60? i++ : 0 ;
}
}
cout<<"数学总分:"<<g[0]<<" 平均分:"<<g[0]/n
<<" 及格率:"<<j[0]/n<<endl<<"英语总分:"<<g[1]
<<" 平均分:"<<g[1]/n<<" 及格率:"<<j[1]/n<<endl
<<"计算机总分: "<<g[2]<<" 平均分: "<<g[2]/n
<<" 及格率:"<<j[2]/n<<endl;
}
//主选菜单函数
char school::mainmenu()
{
char n[6];
cout<<"\n\n 欢迎进入高校学籍管理系统"<<endl<<endl
<<" * * * * * * * * * * * * * * * * * * * * * * * * * * * *"<<endl
<<" * * * * * * * * * * * * * * * * * * * * * * * * * * * *"<<endl
<<" * * 1: 录入学生信息 * *"<<endl
<<" * * 2: 显示学生信息 * *"<<endl
<<" * * 3: 查找学生信息 * *"<<endl
<<" * * 4: 删除学生信息 * *"<<endl
<<" * * 5: 修改学生信息 * *"<<endl
<<" * * 6: 统计学生成绩 * *"<<endl
<<" * * 7: 保存学生信息 * *"<<endl
<<" * * 0: 退出系统 * *"<<endl
<<" * * * * * * * * * * * * * * * * * * * * * * * * * * * *"<<endl
<<" * * * * * * * * * * * * * * * * * * * * * * * * * * * *"<<endl
<<" 请选择:";
cin>>n;
return n[0];
}
int main()
{
school p;
int k=1;
char n;
p.begin();
while(k==1)
{
n=p.mainmenu();
switch(n)
{
case '1':p.input(); break;
case '2':p.show(); break;
case '3':p.found(); break;
case '4':p.del(); break;
case '5':p.mend(); break;
case '6':p.count(); break;
case '7':p.save(); break;
case '0':
if(p.getkey()==1)
{
cout<<"\t\t\t是否保存? 1 : 保存 0:不保存 : ";
cin>>k;
if(k==1)
p.save();
}
p.clear();
k=0;
break;
}
}
return 0;}
...全文
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Eleven 2016-12-09
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student类中这个int find(student **p,int num,char department,char classname,char name,char*pn="^");函数没有定义。
像我这么帅的只有一个 2016-12-09
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把 student 类的函数和成员改成public试试
赵4老师 2016-12-09
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没看出跟VC/MFC有啥关系。
振翅高飞 2016-12-09
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外部调用了类内部的受保护的成员函数？？？
