Page 150 - DCAP404 _Object Oriented Programming

Unit 7: Operator Overloading

#include <iostream.h> Notes
#include <conio.h>
class integer
{
intx;
int y;
intz;
public:
void getdata(int a, int b, int c);
void disp(void);
friend void operator- (integer &s ); // overload unary minus
};
void integer::getdata (int a, int b, int c)
{
x = a; y = b; z = c;
}
void integer::disp(void)
{
cout << x << “ “;
cout << y <<“ “;
cout << z << “\n”;
}
void operator- (integer &s ) // Defining operator- ()
{
s.x = -s.x;
s.y = -s.y;
s.z = -s.z;
}
void main ()
{
integer S;
S.getdata(11 ,-21 ,-31);
Cout<< “S: “;

S.disp();
-S; //activates operator-()
cout<<“-S: “;
S.disp();
getch();
}

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