字符串逆置

#include <iostream>
#include <stdlib.h>

using namespace std;

void main()
{
 int i,j,begin,end;
 char temp;
 char str[] = "i come form helongjiang.";
 i = 0;
 j = strlen(str)-1; //因为数组从0开始，所以减1
 printf("str = %s/n",str);
 //1 先整个倒置
 while(j>i)
 {
  temp = str[i];
  str[i] = str[j];
  str[j] = temp;
  j--;
  i++;
 }
 printf("str = %s/n",str);
 //2 分段逆置
 i = 0;
 while(str[i]!=0)
 {
  if(str[i]!=' ')
  {
   begin = i;
   while(str[i]!=0 && str[i]!=' ')
   {
    i++;
   }
   end = i-1;
  }
  while(begin<end)
  {
   temp = str[begin];
   str[begin] = str[end];
   str[end] = temp;
   begin++;
   end--;
  }
 }
 printf("str = %s/n",str);
}