KnRBookExercises/Chapter1/ex1-9.c

/*
 * Exercise 1-9. Write a program to copy its input to its output, replacing
 * each string of one or more blanks by a single blank.
 */

#include <stdio.h>
#include <stdbool.h>

main()
{
	int		c;
	bool		in_space = false;

	while ((c = getchar()) != EOF) {
		if (c == ' ') {
			if (in_space)
				continue;
			else
				in_space = true;
		} else
			in_space = false;

		putchar(c);
	}
}