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Overload the -- operator for the coord class. Create its both prefix and postfix forms

      

Overload the -- operator for the coord class. Create its both prefix and postfix forms.


  

Answers

Davis
//overload the -- relative to coord class.
#include
using namespace std;
class coord {
int x, y; // coordinate values
public:
coord() {x=0; y=0;}
coord (int i, int j) {x=i; y=j;}
void get(int &i, int &j) {i=x}
coord operator--(int notused); //postfix
};
// Overload prefix -- for coord class.
coord coord::operator --()
{
x--;
y--;
return *this;
}
/erload postfix -- for coord class.
coord coord::operator--(int notused)
{
x--;
y--;
return *this;
}
int main()
{
coord o1(10, 10);
int x, y;
o1--;decrement an object
o1.get_xy(x, y);
cout << "(o1--) x: " << x << " y: " << y << "\n";
--o1; //decrement an object
o1.get_xy(x, y);
cout << "(--o1) x: << x << ", y: " << y << "\n";
return 0;
Githiari answered the question on June 8, 2018 at 18:35

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