【C编程】让字符串反向显示！

/*=========================================
* Copyright (c) 2020, 逐风墨客
* All rights reserved.
* 功能描述：输入任何字符创，并让字符串反向显示
* 所用函数：reverse_string()
* 返回值：字符串反向
=========================================*/

#define MAX_STRING_LENGTH 80

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

int main(void)
{
  char *reverse_string(char *string);
  char input_string[MAX_STRING_LENGTH];
  char *output_string;

  system("clear");
  printf("\n *Please input the string： ");

  gets(input_string);
  output_string = reverse_string(input_string);

  printf("\n *Result： %s\n", output_string);
  return 0;
}

char *reverse_string(char *string)
{
  int i, length;
  char *strBuf;
  
  length = strlen(string);
  strBuf = (char *)malloc(length);
  string = string + length;

  for (i=0; i<length; i++)
  {
    *(strBuf + i) = *-string;
  }

  *(strBuf + i) = '\0';
  return strBuf;  
}