Dear guys, Here I'm gonna show u how to overload different operators in c++.
First of all I'm going to overload unary operator(the operator that acts on one operand) that are ++ and --. so lets overload the -- with a simple example.
#include<iostream>
using namespace std;
class school // create a class school
{
private:
int clsrooms;
public:
school() : clsrooms(10) // ctor to make classrooms to 10 value
{ }
school(int c) : clsrooms(c) // for nameless temp object>next
{ }
int getrooms()
{
return clsrooms;
}
school operator -- (school); // Declaration for main overld func
};
school school::operator--(school s)
{
int crms= clsroom-s.rooms; // subtract one from another
return school(crms); // return nameless temp object to call
// function, the object which dont have any name, here I've initize that to crms, the number of classrooms.
}
///////////////////////////////////////////////////////////////////
int main() / / main function
{
school s1;
school s2;
--s1; // s1 now 9
s2= --s1; // s1=8 and s2=8
cout<<" s1 = " <<s1.getrooms();
cout<<"\n s2= "<<s2.getrooms();
return 0;
}
So the output will be
s1= 8
s2=8
