Constructor Over Loading In C++

Constructor Over Loading In C++

Code:

#include<iostream>
using namespace std;

class complex{

int a;
int b;
public:
complex(){
a=0;
b=0;
}
complex(int x, int y){
a=x;
b=y;
}
complex(int x){
a=x;
b=0;
}

void printnumber(){
cout<<" The Number is " <<a<< " + " <<b<<" i "<<endl;
}
};
int main(){
complex c1(4,5);
c1.printnumber();
complex c2(5);
c2.printnumber();
complex c3;
c3.printnumber();
return 0;

}