textmode

#include <conio.h>

void textmode(int _mode);

Sets the text mode of the screen. _mode is one of the following:

LASTMODE: The text mode which was in effect before the last call to textmode().
BW40: 40-column black and white (on a color screen)
C40: 40-color color.
BW80: 80-column black and white (on a color screen)
C80: 80-column color
MONO: The monochrome monitor
C4350: 80-column, 43- (on EGAs) or 50-row (on VGAs) color

See section _set_screen_lines, for a more versatile method of setting text screen dimensions.

Portability

not ANSI, not POSIX