I need a variable display routine

Okay, I got the font working a-ok. I got two functions, TextLine() and NumberLine(). When you have text, or text mixed with numbers, you use TextLine() if you are using only numbers, you use NumberLine(), because it is faster. Now I need a function that displays variables. Whenever I throw a variable into either one of these functions, it gives a lacks a cast error. So can someone gimmie a function to display variables? Let me explain how my program works. Each picture you have to type BITMAP then whatever you want the name of the pic to be (not the filename) then you type this on another line load_bmp("filename",&picname);

to display a pic use this
draw_bitmap(&picname,xposition,yposition)
for a transparency (black)
draw_transparent_bitmap(&picname,xposition,ypositi on)

the bitmap for each letter is the letter.bmp

PS: Sorry for such a weird bitmap drawing proccess, but you get used to it

have you tried itoa();? it transforms an integer into a string (array).

but whenever I throw a string OR a variable in a function, it will throw a hissy fit, giving cast errors.