how to get commas into numbers make 1000 look like 1,000

[needhelpalot]

i need to know what code i can use to insert commas in the right places the numbers never go about 5000 but i need commas to be present whenever they are needed so i don't need commas for anything 999 or less I am really new to this C++ and really need help Please and thank you for any help

[ultifinitus]

Well an easy way would be to use stringstream. You wouldn't be able to use the return value for anything useful other than displaying the info however.

[needhelpalot]

How do i do that?
the file name that I'm importing the number from an infile is called amount

[ultifinitus]

http://www.cplusplus.com/reference/iostream/stringstream/

it's very similar to cout and cin