Merge branch 'master' into 'master'

Hint that the div function may throw

See merge request jg943598/rpn_calculator!1

main.cpp

@@ -30,7 +30,8 @@ int multiply(int a, int b) {
 }
 
 /*
- * Divides integer b from integer a, throwing an exception when b is zero
+ * Divides integer b from integer a, throwing an exception when b is zero.
+ * Throws an std::invalid_argument exceptions if invalid parameters are provided.
  */
 int divide(int a, int b) {
   if (b == 0) {