gistfile1.c

/*print a single blank for any number of blanks*/
#include <stdio.h>
#include <stdbool.h>
#include <ctype.h>


int main()
{
	int c = getchar();

	while (c != EOF) {
		if (isblank(c)) {
			while (c == ' ') {
				c = getchar(); 
			}
			putchar(' ');
		} else {
			putchar(c);
			c = getchar();
		}
	}

	return 0;
}