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frn_inc.cpp
Upload User: dq031136
Upload Date: 2022-08-08
Package Size: 802k
Code Size: 1k
Category:
Visual C++ Books
Development Platform:
C++ Builder
- #include <iostream.h>
- class loc
- {
- int longitude, latitude;
- public:
- loc(void) {} // Used to construct temporaries
- loc (int lg, int lt)
- {
- longitude = lg;
- latitude = lt;
- }
- void show(void)
- {
- cout << longitude << " ";
- cout << latitude << endl;
- }
- loc operator=(loc op2);
- friend loc operator++(loc &op1); // Friend overloaded
- friend loc operator--(loc &op1); // Friend overloaded
- };
- loc loc::operator=(loc op2)
- {
- longitude = op2.longitude;
- latitude = op2.latitude;
- return *this;
- }
- loc operator++(loc &op)
- {
- op.longitude++;
- op.latitude++;
- return op;
- }
- loc operator--(loc &op)
- {
- op.longitude--;
- op.latitude--;
- return op;
- }
- void main(void)
- {
- loc ob1(10,20), ob2;
- ob1.show();
- ++ob1;
- ob1.show(); // Displays 11 and 21
- ob2 = ++ob1;
- ob2.show(); // Displays 12 and 22
- --ob2;
- ob2.show(); // Displays 11 and 21 again
- }