float strwidth (string, height) FNTPLT.C Level 1
 
char *string String whose half-width is desired.
float height Character height in inches (or cm) of the high-resolution plotter output.
 
strwidth() returns the half-width of the character string. The value is measured in inches (or cm) on the high-resolution plotter output. It is useful for centering strings or for being sure to allow enough space.