refactor

src/main.cpp

@@ -0,0 +1,12 @@
+#include <iostream> // for std::cout
+#include "io.h"
+
+// Definition of function main()
+int main()
+{
+
+    int a{readNumber()};
+    int b{readNumber()};
+    writeAnswer(a + b);
+    return 0;
+}