#include <iostream>
// Generic method (function template)
template <typename T>
void swapValues(T& a, T& b) {
T temp = a;
a = b;
b = temp;
}
int main() {
// Swap integers
int x = 10, y = 20;
std::cout << "Before swap (int): x = " << x << ", y = " << y << "\n";
swapValues(x, y);
std::cout << "After swap (int): x = " << x << ", y = " << y << "\n" << "\n";
// Swap doubles
double d1 = 3.14, d2 = 6.28;
std::cout << "Before swap (double): d1 = " << d1 << ", d2 = " << d2 << "\n";
swapValues(d1, d2);
std::cout << "After swap (double): d1 = " << d1 << ", d2 = " << d2 << "\n" << "\n";
// Swap strings
std::string s1 = "Hello", s2 = "World";
std::cout << "Before swap (string): s1 = " << s1 << ", s2 = " << s2 << "\n";
swapValues(s1, s2);
std::cout << "After swap (string): s1 = " << s1 << ", s2 = " << s2 << "\n";
}
/*
run:
Before swap (int): x = 10, y = 20
After swap (int): x = 20, y = 10
Before swap (double): d1 = 3.14, d2 = 6.28
After swap (double): d1 = 6.28, d2 = 3.14
Before swap (string): s1 = Hello, s2 = World
After swap (string): s1 = World, s2 = Hello
*/
