逆转c字符串

题目：

1. Write code to reverse a C-Style String (C-String means that “abcd” is represented as five characters, including the null character )

参考解法：把数组的思维去除，用指针的哨兵来做会更简单一点。

第一遍解：

遍历字符串得出长度后，然后首尾互换。

//
//  main.cpp
//  reverse
//
//  Created by lexnewgate on 15/11/6.
//  Copyright © 2015年 lexnewgate. All rights reserved.
//

#include <iostream>
#include <vector>

void reverseStr(char*str)
{
    int i=0;
    for (i=0; *(str+i)!=‘\0‘; i++) {

    }
    for (int j=0; j<i/2; j++) {
        char temp=*(str+j);
        *(str+j)=*(str+i-j-1);
        *(str+i-j-1)=temp;
    }
    return ;
}

int main(int argc, const char * argv[]) {

    char p[]="abcdcxdswsw";
    reverseStr(p);
    printf("%s\n",p);

    return 0;
}