字符串逆置

重视思想和理解原理

#include <iostream>
#include <cstdlib>
#include <cstring>
using namespace std;char* reverseStr(char * str, char * dest, int len)
{//指向最后一个字符char * s= &str[len-1];char *d = dest;while(len >= 0){*dest++ = *s--;len--;}return d;
}int main()
{char * str = "hello world";int len = strlen(str);char *dest = (char *)malloc(sizeof(char)*len);char* d = reverseStr(str, dest, len);cout<<"d==="<<d<<endl;return 0;
}