将一句话里的单词倒置，标点符号不倒换。

题目：

将一句话里的单词导致，标点符号不倒换。例如一句话，"I come from Tianjin."，倒换后的结果为"Tianjin. from come I"。

Code(C):

#include<stdio.h>#include<string.h>void change(char *s);reverse(char *s,int start,int end);void main(){char s[50];printf("请输入字符串\n");gets(s);change(s);printf("到之后的字符串为%s\n",s);}void change(char *s){int len,start,end,i;len = strlen(s);start = 0;end = len-1;reverse(s,start,end);end = 0;for(i = 0;i < len;){if(s[i] != ' '){start = i;while(s[i] != ' ' && s[i] != '\0')i++;i = i-1;end = i;reverse(s,start,end);;}i++;}}reverse(char *s,int start,int end){char temp;while(start < end){temp = s[start];s[start] = s[end];s[end] = temp;start++;end--;}}