*// Using friend functions to overload addition and subtarction operators*
#include <iostream.h>
class myclass
{
int a;
int b;
public:
myclass(){}
myclass(int x,int y){a=x;b=y;}
void show()
{
cout<<a<<endl<<b<<endl;
}
*// these are friend operator functions
// NOTE: Both the operans will be be passed explicitely. operand to the left
of the operator will be passed as the first argument and operand to the
right as the second argument
*friend myclass operator+(myclass,myclass);
friend myclass operator-(myclass,myclass);
};
myclass operator+(myclass ob1,myclass ob2)
{
myclass temp;
temp.a = ob1.a + ob2.a;
temp.b = ob1.b + ob2.b;
return temp;
}
myclass operator-(myclass ob1,myclass ob2)
{
myclass temp;
temp.a = ob1.a - ob2.a;
temp.b = ob1.b - ob2.b;
return temp;
}
void main()
{
myclass a(10,20);
myclass b(100,200);
a=a+b;
a.show();
}
--
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