[C语言]给定一个字符串，逐个翻转字符串中的每个单词。

//将参数字符串中的字符反向排列
//eg:hello world -> world hello
//将整个字符串进行逆置，然后将字符串中各个单词进行逆置

#include <stdio.h>
#include <string.h>
 
void reverse(char* left,char* right)
{
	char tmp = 0;
	while (left<right)
	{
		tmp = *left;
		*left = *right;
		*right = tmp;
		left++;
		right--;
	}
}
 
int main()
{
	char arr[100] = { 0 };
	gets(arr);   //How are you?
	char* start = arr;
	int len = strlen(arr);
	char* end = arr + len - 1;
	reverse(start, end);   //先将整句话倒置 ?uoy era woh
	char* str = arr;
	int i = 0;
	for (i = 0; i <= len; i++)    //通过空格和最后的'\0'拆分单词，将每个单词倒置
	{
		if (*str == ' ' || *str == '\0')
		{
			reverse(start, str - 1);
			start = str + 1;
		}
		str++;
	}
	printf("%s\n", arr);
	return 0;
}