Printing extended ASCII characters

I am writing a program to print a report. I need to include the pound sign symbol on this report(£), which I have discovered is ASCII character #156 (thanks!).
Trouble is, my printer does not seem to recognise this character from within a C program.
I have run a small program to loop through from 1 - 255 and print all characters (ie all ASCII), but it is printing blanks after #127.
I gather that characters from 128 - 255 are extended ASCII characters - is there a way I can get my printer to recognise these (within C)?
They can be printed from a word processed document, so there must be a way!

Try using an unsigned char instead of a normal char

What font are you printing in? What kind of printer (dot matrix, laser, inkjet, etc.) do youhave?