倒置字符串

#include <stdio.h>
#include<string.h>

void reverse(char* left, char* right)
{
	while (left < right)
	{
		char tmp = *left;
		*left = *right;
		*right = tmp;
		left++;
		right--;
	}
}

int main()
{
	char arr1[100] = { 0 };
	//输入
	gets_s(arr1);
	//倒转字符串
	int len = strlen(arr1);
	reverse(arr1, arr1 + len - 1);
	//逆置每个单词
	char* start = arr1;
	while (*start)
	{
		char* end = start;
		while (*end != ' ' && *end != '\0')
		{
			*end++;
		}
		reverse(start, end - 1);
		if(*end != '\0')
		end++;
		start = end;
	}

	//输出
	printf("%s", arr1);
	return 0;
}