#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 = ;

     char *cur = str;

     while (k--)

     {

         //左旋一次

         temp = *str;

         cur = str;

         while (*(cur + ) != '\0')

         {

             //每个字符向前推一个

             *cur = *(cur + );

             cur++;

         }

         *cur = temp;

     }

 }

 int main()

 {

     char str[] = "abcdefg";

     left_rotate(str, );

     printf("%s\n", str);

     system("pause");

     return ;

 }