Determine whether this character is a blank space.
This function determines whether a given character is a blank, or white-space, character, such as a space, tab, new-line character, formfeed, or carriage return. 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,"\nHit Space, Tab, or Enter: ",string1);
returni=sds_isspace(string1[0]);
if (returni == 0)
sds_printf("\nYou typed something that is NOT blank space. ");
else
sds_printf("\nYou entered some blank space. ");
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Programming Overview of SDS™ (Solutions Development System™)