C language. Do not use functions. Please explain the coding. Make a flowchart.

b) Displaying the last of each month Write a program that prompts the user to enter the year and the first day of the year, and displays the first day of each month in the year. For example, if the user entered the year 2004, and 4 for Thursday, January 1, 2004; your program should display the following output (note that Sunday is 0): January 31, 2004 is Saturday. February 29, 2004 is Sunday. December 31, 2004 is Friday