题目：以每行一个单词的形式打印输入
我的程序是（没有结果）：
#include <stdio.h>
#define IN 1
#define OUT 0
void main()
{
    int c,state;
    state=OUT;
    while((c=getchar())!='\n')
        {
            if(c==' '||c=='\n'||c=='\t')
                {
                    if(state==IN)
                        {
                            putchar('\n');
                            state=OUT;
                        }
                    else if(state==OUT)
                        {
                            state=IN;
                            putchar(c);
                        }
                    else
                        putchar(c);
                }
        }
}