//写一个函数，实现字符串内单词逆序//例如student a am i，，逆序后i am a student。#include <stdio.h>#include <string.h>#include <assert.h>void reverse_string(char *left, char *right) //连续的字符串逆序{char temp;while (right > left){temp = *left;*left = *right;*right = temp;left++;right–;}}char *reserve(char *str){assert(str);char *first = str;char *last = str + strlen(str) – 1;while (*str){char *part = str;while (*str != ' '&&*str != '\0'){str++;}reverse_string(part, str – 1);if (*str != '\0'){str++;}elsebreak;}reverse_string(first, last);return first;}int main(){char p[] = "student a am i";printf("%s\n", reserve(p));return 0;}
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