made error messages corrt fropypasta err
Added printing fucntions for expressions
whitespace formatting
added closing paren to output
Added comment to functions input syntax
Added comment to image output with function in it
Added Progress Bar
remove source ppm file after conversion
added comment support to parser
Fixed error about non intialized type

Exponent eval was not handling sub expression
Added FILE* to print expression fucntions
added image
updated fucntions