Write a program named

days

of

month.cpp

that prompts to users to enter the

year

and first

three letters of a

month

$($these letters can be either uppercase or lowercase$).$ Displays the

number of days of the

month

$.$

Your program must displays message

"Invalid month. Please use three first letters

of the month name!"

if the user entered incorrect month$$s name.

Hints:

$$

Use function

std::toupper$()$

or

std::tolower$()$

to standardize the month$$s name

before checking its meaning. These two functions are declared in

string

library.

$$

The February of a leap year $($divisible by $4)$ has $29$ days instead of $28$ days.

Here are some example outputs when running the program from a terminal.

$/$workspace$/$csc$117/$hw$5$

$

g$++-$o out$/$days$\_$of$\_$month.out src$/$days$\_$of$\_$month.cpp

$

$./$out$/$days$\_$of$\_$month.out

Enter a year: $2024$

Enter a month: Feb

Feb $2024$ has $29$ days

$

$./$out$/$days$\_$of$\_$month.out

Enter a year: $2014$

Enter a month: Feb

Feb $2014$ has $28$ days

$

$./$out$/$days$\_$of$\_$month.out

$2$

Enter a year: $2024$

Enter a month: $10$

Invalid month. Please use three first letters o