question

[savanh]

why it does not run ?

#include<iostream>
#include<string>
using namespace std;
class mark{
public:
int point;
mark();
mark(int m){
	point=m;
}
mark operator+(mark obj){
mark b;
b.point=point+obj.point;
return (b);
}
};

int main(){
mark obj1(2);
mark obj2(6);
mark obj3=obj1+obj2;
cout<<"the result wiull be "<<obj3.point;



system("pause");
return 0;
}

[Jaybob66]

@line 7 you declared a default constructor without defining it.

mark(){};

[savanh]

thank u so much