字符串反轉--單詞不逆序

#include<stdio.h>
#include<string.h>

void reverseStr(char * str, int nLen)
{
    char cTemp;

    if(nLen <= 1)
         return;
    int i;
    for(i=0; i<nLen/2; i++)
    {
         cTemp = str[i];
         str[i] = str[nLen-1-i];
         str[nLen-1-i] = cTemp;
    }
}

void reverseWord(char * str)
{
    char * p = str;
    int nLen = strlen(str);
    int nSubLen = 0;



    //整體逆置
    reverseStr(str, nLen);

    //單詞逆置
    int i;
    for(i=0; i<=nLen; i++)
    {
        if(isalpha(str[i]))
       {
           nSubLen++;
       }
       else
       {
           reverseStr(p, nSubLen);
           p = str + i + 1;
           nSubLen = 0;
       }
    }
}

int main()
{
    char str[] = "I love you";
    reverseWord(str);
    printf("%s\n",str);
}