C语言实现左旋字符串

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

void left_rotate(char *str, int k)
{
    int len=strlen(str);
    k %= len;//减少重复次数

    char temp = 0;
    char *cur = str;
    while (k--)
    {

        //左旋一次
        temp = *str;
        cur = str;
        while (*(cur + 1) != '')
        {
            //每个字符向前推一个
            *cur = *(cur + 1);
            cur++;
        }

        *cur = temp;
    }
}



int main()
{
    char str[100] = "abcdefg";
    left_rotate(str, 2);
    printf("%s
", str);

    system("pause");
    return 0;

}