#include
void swap(int x, int y);
int main()
{
int x = 5, y = 10;
std::cout << "Main. Before swap, x: " << x << " y: " << y << "\n";
swap(x,y);
std::cout << "Main. After swap, x: " << x << " y: " << y << "\n";
return 0;
}
void swap (int x, int y)
{
int temp;
std::cout << "Swap. Before swap, x: " << x << " y: " << y << "\n";
temp = x;
x = y;
y = temp;
std::cout << "Swap. After swap, x: " << x << " y: " << y << "\n";
}
Main. Before swap, x: 5 y: 10
Swap. Before swap, x: 5 y: 10
Swap. After swap, x: 10 y: 5
Main. After swap, x: 5 y: 10