fig08_04.cpp

// fig08_04.cpp
// Using the swap function to swap two strings.
#include <fmt/format.h> 
#include <iostream>
#include <string>

int main() {
   std::string s1{"one"};
   std::string s2{"two"};

   std::cout << fmt::format("Before swap:\ns1: {}; s2: {}", s1, s2);
   s1.swap(s2); // swap strings
   std::cout << fmt::format("\n\nAfter swap:\ns1: {}; s2: {}", s1, s2);
}

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