Function Overloading

SwapFuncOverloading.cpp

#include <iostream>

void swap(int *n1, int *n2);
void swap(char *n1, char *n2);
void swap(double *n1, double *n2);

int main() {
	int num1 = 20, num2 = 30;
	swap(&num1, &num2);
	std::cout << num1 << ' ' << num2 << std::endl;

	char ch1 = 'A', ch2 = 'Z';
	swap(&ch1, &ch2);
	std::cout << ch1 << ' ' << ch2 << std::endl;

	double dbl1 = 1.111, dbl2 = 5.555;
	swap(&dbl1, &dbl2);
	std::cout << dbl1 << ' ' << dbl2 << std::endl;

	return 0;
}

void swap(int *n1, int *n2) {
	int tmp;

	tmp = *n1;
	*n1 = *n2;
	*n2 = tmp;
}

void swap(char *n1, char *n2) {
	char tmp;

	tmp = *n1;
	*n1 = *n2;
	*n2 = tmp;
}

void swap(double *n1, double *n2) {
	double tmp;

	tmp = *n1;
	*n1 = *n2;
	*n2 = tmp;
}