c
/*
* File: exercise_12.c
* File Created: Wednesday, 3rd May 2023 4:26:32 pm
* Author: 无涯 (mxl233@qq.com)
* Last Modified: Thursday, 4th May 2023 9:59:07 pm
*/
#include <stdio.h>
#define IN 1 // word character start.
#define OUT 0 // word character end.
// Write a program that prints its input one word per line.
main(){
int c, nl, nw, state;
state = OUT;
nl = nw = 0;
while ((c = getchar()) != EOF)
{
putchar(c);
if(c == ' ' || c == '\t' || c == '\n'){
putchar('\n');
}
}
}