请问我这个主函数里该咋写，怎么都不对呢，

Question

请问我这个主函数里该咋写，怎么都不对呢，左后要输出他所有信息。
一直显示这个错误，在Professor p1("teacher",2002,4,3);倒数第四行
[Error] no matching function for call to 'Professor::Professor(const char [8], int, int, int)'

#include <iostream>
#include <string>
using namespace std;
class Date 
{
private:
    int year;
    int month;
    int day;
public:
    Date(int Y,int M,int D)
    {
        year=Y;
        month=M;
        day=D;
    }
    void show()
    {
        cout<<"出生日期 : "<<year<<" 年 "<<month<<" 月 "<<day<<" 日 "<<endl;
    }
};
class Teacher 
{
private:
    int num;
    string name;
    char sex; 
public:
    Teacher(){} 
    Teacher(int num2,string na,char s)
    {
        num=num2;
        name=na;
        sex=s;
    } 
    void showInfo()//输出 
    {
        cout<<"工号："<<num<<" 姓名："<<name<<" 性别："<<sex<<endl;
    } 
};
class Professor:public Teacher
{
private:
    string title;
    Date birthday;
public:
    Professor(int num2,string na,char s,string tit,int Y,int M,int D):Teacher(num2,na,s)
    ,title(tit),birthday(Y,M,D){}
    void display()
    {
        cout<<"职称："<<title<<endl;
        birthday.show();
    }
};    
int main()
{
    Teacher t1(4637283,"zhangsan",'m');
    t1.showInfo();
    Professor p1("teacher",2002,4,3);
    p1.display();
    return 0;
}

Answer 1

Professor构造函数参数个数不正确，Professor构造函数有7个， 你倒数第四行只传递了4个。