Merge branch 'double'

main.cpp

@@ -2,7 +2,7 @@
 using namespace std;
 int main() {
 	cout << "Enter A and B: ";
-    int a, b;
+    double a, b;
     cin >> a >> b;
     cout << "A + B = " << a + b << endl;
     cout << "A - B = " << a - b << endl;