Determine whether this a graphical character.
This function determines whether a given character is a graphical character. The argument val is the ASCII value for a character.
This function returns non-zero if the given character is alphabetical. Otherwise, it returns zero.
Example
int returni;
char string1[512];
sds_getstring(1,"\nEnter a graphical character-try (c) (ALT-0169): ",string1);
returni=sds_isgraph(string1[0]);
if (returni == 0)
sds_printf("\nThe character is NOT graphical. ");
else
sds_printf("\nThe character IS graphical. ");
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Programming Overview of SDS™ (Solutions Development System™)