输入一行字符串（单词和若干空格），输出该行单词（每个单词一行）

Input： hello world how are you \n
Output: hello
world
how
are
you
思路：是空格就不输出，不是空格就输出，再碰到空格注意输出换行

指针实现：

#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define maxn 512

void count(char *p) {
	int flag = 0;
	while (*p != '\0') {
		if (*p != ' ') {
			printf("%c", *p);
			flag = 1;
			if (*(p + 1) == '\0') {
				printf("\n");
			}
		}
		else if(*p == ' '&&flag==1){
			flag = 0;
			printf("\n");
		}
		p++;
	}
}
int main() {
	char a[maxn] = {0};
	while (gets(a) != NULL) {
		count(a);
		memset(a, 0, sizeof(a));
	}
	return 0;
}

/*
I       am   a  student\n
       hello         world    how   are   you    \n  
*/