C language please! Says solved but not completely$3\mathrm{.}26$ LAB: Seasons

LAB

Write a program that takes a date as input and outputs the date's season in the northern hemisphere. 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 in the northern hemisphere are:

Spring: March $20-$ June $20$

Summer: June $21-$ September $21$

Autumn: September $22-$ December $20$

Winter: December $21-$ March $19$