字符串反转

#include<stdio.h>
#include<stdlib.h>

char *_strrev(char *s);
void * memmove(void *dest,const void *src,int n);


void main(void)
{
    char ch1[] = "panhong";
    printf("%s\n",ch1);
    char *p;
    p = _strrev(ch1);
    printf("%s\n",p);

    //char *temp_1,*temp_2;
    p = memmove(p,ch1,3);
    printf("%s\n",p);
}


char *_strrev(char *s)
{
    if (s == NULL || s[0] == '\0')
        return s;
    char t;
    char *p = s, *q = s + strlen(s) - 1;
    for (; p < q; p++, q--)
        t = *p, *p = *q, *q = t;

    return s;
}


void * memmove(void *dest,const void *src,int n)
{
    char *temp_1 = (char *)dest;
    char *temp_2 = (char *)src;
    int i = 0;

    for(;i<n;i++)
    {
        *(temp_1++) = *(temp_2++);
    }

    return (temp_1);
}