#include <iostream>
#include<string>
using namespace std;
class teacher
{public:
    teacher(string nam,int a,string t)
{name=nam;
age=a;
title=t;}
void display()
{cout<<"name:"<<name<<endl;
cout<<"age:"<<age<<endl;
cout<<"title:"<<title<<endl;
}
protected:
    string name;
    int age;
    string title;
};
class student
{public:
student(char nam[],char s,float sco)
{strcpy(namel,nam);
 sex=s;
 score=sco;}
void display()
{cout<<"name:"<<namel<<endl;
 cout<<"sex:"<<sex<<endl;
 cout<<"score:"<<score<<endl;
}
protected:
    string namel;
    char sex;
    float score;
};
class graduate:public teacher,public student
{public:
graduate(string nam,int a,char s,string t,float sco,float w):
teacher(nam,a,t),student(nam,s,sco),wage(w){}
void show()
{cout<<"name:"<<namel<<endl;
 cout<<"age:"<<age<<endl;
cout<<"sex:"<<sex<<endl;
cout<<"score:"<<score<<endl;
cout<<"title:"<<title<<endl;
cout<<"wager:"<<wager<<endl;
}
private:
    float wage;
};
int main()
{graduate gradl("wang",24,'f',"assistant",1234.5,123.5);
gradl.show();
return 0;
}

teacher(string name,int age,string title)
{name="nam";
age="a";
title="t";}
错得较多，举个例子：所有的赋值应该这样，应该多看看书应可以啦，

#pragma argsused
#include <iostream>
#include<string>
using namespace std;
class teacher
{public:
    teacher(char* nam,int a,char t)
{
strcpy(name,nam);
age=a;
title=t;
}
void display()
{cout<<"name:"<<name<<endl;
cout<<"age:"<<age<<endl;
cout<<"title:"<<title<<endl;
}
protected:
    char* name;
    int age;
    string title;
};
class student
{public:
student(char nam[],char s,float sco)
{

sex=s;
score=sco;}
void display()
{cout<<"name:"<<namel<<endl;
cout<<"sex:"<<sex<<endl;
cout<<"score:"<<score<<endl;
}
protected:
    string namel;
    char sex;
    float score;
};
class graduate:public teacher,public student
{public:
graduate(char* nam,int a,char s,char* t,float sco,float w):
teacher(nam,a,s),student(nam,s,sco),wage(w){}
void show()
{cout<<"name:"<<namel<<endl;
cout<<"age:"<<age<<endl;
cout<<"sex:"<<sex<<endl;
cout<<"score:"<<score<<endl;
cout<<"title:"<<title<<endl;
cout<<"wager:"<<wage<<endl;
}
private:
    float wage;
};
int main()
{
graduate gradl("wang",24,'f',"assistant",1234.5,123.5);
gradl.show();
getchar();
return 0;
}


//大体是这样  有点乱 自己再看看改改

ok 啦！！！
#include <iostream>
#include<string>
using namespace std;
class teacher
{
public:
    teacher(string nam,int a,string t)
    {
        name=nam;
        age=a;
        title=t;
    }
    void display()
    {
        cout<<"name:"<<name<<endl;
        cout<<"age:"<<age<<endl;
        cout<<"title:"<<title<<endl;
    }
protected:
    string name;
    int age;
    string title;
};
class student
{
public:
    student(string nam,char s,float sco)
    {
        namel=nam;
        sex=s;
        score=sco;
    }
    void display()
    {
        cout<<"name:"<<namel<<endl;
        cout<<"sex:"<<sex<<endl;
        cout<<"score:"<<score<<endl;
    }
protected:
    string namel;
    char sex;
    float score;
};
class graduate:public teacher,public student
{
public:
    graduate(string nam,int a,string t,char s,float sco,float w):
      teacher(nam,a,t),student(nam,s,sco),wage(w){}
      void show()
      {
          cout<<"name:"<<namel<<endl;
          cout<<"age:"<<age<<endl;
          cout<<"sex:"<<sex<<endl;
          cout<<"score:"<<score<<endl;
          cout<<"title:"<<title<<endl;
          cout<<"wager:"<<wage<<endl;
      }
private:
    float wage;
};
int main()
{
    graduate gradl("wang",24,"assistant",'f',1234.5,123.5);
    gradl.show();
    return 0;
}

顶四楼！！！你程序就student类的构造函数有问题，还有个问题就是show()输出时把数据成员的标识符打错了！！！其他地方都是对的！！

这是个什么意思？

多继承！！