labs 9: init

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

lab9/25.cpp

@@ -0,0 +1,26 @@
+#include <iostream>
+using namespace std;
+
+template <typename T,
+          typename = enable_if_t<std::is_arithmetic<T>::value, T>>
+class Foo {
+  T x, y;
+
+public:
+  Foo() {
+    cout << "x: ";
+    cin >> x;
+    cout << "y: ";
+    cin >> y;
+  }
+
+  T sum() { return x + y; };
+};
+
+int main() {
+  Foo<float> bar;
+
+  cout << bar.sum();
+
+  return 0;
+}