编程实现字符串的循环右移

编写的函数能把一个char组成的字符串循环右移n个。例如原来是“abcdefghi”，如果n = 2,移位后应该是“hiabcdefg”.
代码

#include <stdio.h>
#include <stdlib.h>
void loopMove(char *str,int n)
{
    int i = 0;
    char * temp = NULL:
    int strLen = 0;
    char * head = str;
    while(*str++);
    strLen = str-head-1;
    n = n%strLen;
    temp = (char*)malloc(n);
    for(i = 0;i<n;i++)
    {
        temp[i] = head[strLen - n +i];
    }
    for(i = strLen-1;i>=n;i--)
    {
        head[i] = head[i=n];
    }
    for(i = 0;i<n;i++)
    {
        head[i] = temp[i];
    }
    free(temp);
}
int main()
{
    char string[] = "123456789";
    int steps = 0;
    printf("%s\n",string);
    scanf("%d",&steps);
    loopMove(string,steps);
    printf("%s\n",string);
    return 0;
}