labs 8: init

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

lab8/22.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+
+template <typename T, std::enable_if_t<std::is_arithmetic<T>::value, T> = 0>
+void swap(T &x, T &y) {
+  x += y;
+  y = x - y;
+  x -= y;
+}
+
+int main() {
+  char x = '[';
+  char y = 'w';
+
+  swap(x, y);
+
+  std::cout << "x = " << x << ", y = " << y;
+
+  return 0;
+}