int times(int searchNum, int arr[], int length) // length 是数组元素个数，searchNum是要查找的值  {          int num = (arr[length - 1] == searchNum)  ? 1 : 0;                if(length > 0)          {                  return num + times(searchNum, arr, length - 1);             }          return 0;  }  //或  int get_count( int array[] , int length , int num ){          if( length )                  return (num==*array) + get_count( ++array , --length , num);          return 0;  }