Write a program that takes a date as input and outputs the date's season. The input is a string to represent the month and an int to represent the day. Ex: If the input is:

April 11

the output is:

Spring

In addition, check if the string and int are valid (an actual month and day).

Ex: If the input is:

Blue 65

the output is:

Invalid

The dates for each season are:
Spring: March 20 - June 20
Summer: June 21 - September 21
Autumn: September 22 - December 20
Winter: December 21 - March 19

IN C++ ONLY
please and thank you