#include <iostream>
using namespace std;


void swapx(int &a, int &b)
{
    int t = a;
    a = b;
    b = t;
}

void swapx(float &a, float &b)
{
    float t = a;
    a = b;
    b = t;
}




int main()

{

	int x=5,y=10;
	swapx(x,y);
	cout << x << ":" << y << endl;

	float xf=5.4,yf=10.1;
	swapx(xf,yf);
	cout << xf << ":" << yf << endl;


	return 0;

}