Hi, this is my first time here and I have a problem. I am trying to write a C++ program in Unix that gives me the Gregorian calendar with exceptions to leap year. I have all of my algorithms for calculating days, printing out the months, and such. My problem is that I need a loop in my int main function that loops the input in a way in which it would allow my days and day numbers to sync up and print them in columns and rows.....any suggestions??

There's a number of ways to do this. What you're looking for is constant-width columns, correct? For the dates, this isn't too bad, because you just have to do a check based on if the value will be less than ten, and zero/space pad the value in formatting.

For the letters, though, things are a little harder.
Here's just one idea.
You could enumerate the days and months in an order based on the number of letters.
ie,
and then use the value of the enumeration to set how many spaces you'll need to format the columns correctly with an if statement.

Another problem will be the fonts used at your terminal. Every terminal may be using a different font set, so the spacing between colums will be diffeent. This app may be a good use for curses library, or use a good GUI library such as QT.