deblank

// Remove multiple space characters in a string.
// Ansi string and UTF-8 only!
 
void deblank(char* string)
{
	char* s = string;
	char* c = string;
	do
	{
		while (*c == ' ') c++;
		*s++ = *c;
		if (*c == '\0') break;
		if (*++c == ' ')
		{ 
			*s++ = ' ';
			c++;
		}
	} while (1);
}
 
int main()
{
	char s[] = "abc def  ghj   klmn.";
	deblank(s);
	printf("%sn", s);
	return 0;
}