统计字符串中单词的个数--空格间隔

#include<stdio.h>
int function(char s[])
{
	int i = 0;
	int flag = 1;
	int count = 0;
	for(i=0;s[i]!='\0'; i++)
	{
		if (s[i] == ' ')
		{
			flag = 1;
		}
		else if (flag == 1)
		{
			flag = 0;
			count++;
 
		}
	}
	return count;
}
int main()
{
	char s[30];
	printf("请开始输入字符串:");
	gets(s);
	printf("\n字符串中单词的个数是:%d\n", function(s));
	return 0;
}