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 = ;
     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 ;

 }