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#include <iostream>

#include<string>

using namespace std;

class student

{

int num;

string name;

int age;

public:

student(){num=0;name='\0';age=0;}
student(int,string,int);

void show();

};

student::student(int a,string b,int c):num(a),name(b),age(c){}

void student::show()

{

cout<<"student number:"<<ends<<num<<endl;

cout<<"name:"<<ends<<name<<endl;

cout<<"age:"<<ends<<age<<endl;

}
int main()

{

student s1(200803986,"zhangsan",23);

s1.show();

return 0;

}