这是什么地方错了呢?

[harderror]

#include <iostream>
#include <string>
using namespace std;
class student
{public:
        student(int n,string nam,char se)
        {num=n;
        name=nam;
        sex=se;
        }
        void display();
protected:
          int num;
          string name;
          char sex;
          };
void student::display()
{cout<<"num:"<<num<<endl;
 cout<<"name:"<<name<<endl;
 cout<<"sex:"<<sex<<endl;
}

class student1:protected student
{public:
        student1(int n,string nam,char se,int ag,string add):student(n,nam,se)
        {age=ag;
        addr=add;
        }
        void display1();
private:
        int age;
        string addr;
        };
void student1::display1()
{cout<<"num:"<<num<<endl;
 cout<<"name:"<<name<<endl;
 cout<<"sex:"<<sex<<endl;
 cout<<"age:"<<age<<endl;
 cout<<"address:"<<addr<<endl;
}
int main()
{student stu(1001,"wuminglu","m");
student1 stu1(26,"dalian");
stu.display();
stu1.display1();
return 0;
    }

[IVERS0N]

student stu(1001,"wuminglu",‘m’); //第三参数是字符

student1 stu1(26,"dalian");//这个构造函数5个参数

[lylm]

对比一下注释的地方

#include <iostream>
#include <string>
using namespace std;
class student
{public:
        student(int n,string nam,char se)
        {num=n;
        name=nam;
        sex=se;
        }
        void display();
protected:
          int num;
          string name;
          char sex;
          };
void student::display()
{cout<<"num:"<<num<<endl;
 cout<<"name:"<<name<<endl;
 cout<<"sex:"<<sex<<endl;
}

class student1:protected student
{public:
        student1(int n,string nam,char se,int ag,string add):student(n,nam,se)
        {age=ag;
        addr=add;
        }
        void display1();
private:
        int age;
        string addr;
        };
void student1::display1()
{cout<<"num:"<<num<<endl;
 cout<<"name:"<<name<<endl;
 cout<<"sex:"<<sex<<endl;
 cout<<"age:"<<age<<endl;
 cout<<"address:"<<addr<<endl;
}
int main()
{student stu(1001,"wuminglu",'m');//改成单引号
student1 stu1(26,"dalian",'f',15,"test");//构造函数需要5个参数
stu.display();
stu1.display1();
return 0;
    }

[harderror]

谢谢了.

[Joseph-Growth]

student stu(1001,"wuminglu","m");
student1 stu1(26,"dalian");
创建对象时需要构造函数，你没发现你的两个构造函数在类里面找不到对应的构造函数嘛？
正确的是：
student stu(1001,"wuminglu",'m');
student1 stu1(1001,"wuminglu",'m',26,"dalian");

[harderror]

[Quote=引用 4 楼 的回复:]

student stu(1001,"wuminglu","m");
student1 stu1(26,"dalian");
创建对象时需要构造函数，你没发现你的两个构造函数在类里面找不到对应的构造函数嘛？
正确的是：
student stu(1001,"wuminglu",'m');
student1 stu1(1001,"wuminglu",'m',26,"dalian");
[/Quote]

谢谢你了,不过已经结贴了.