C++模板在取三个数最小值时使用出错

在用模板取三个数中最小的数时在另一个.h文件跳出来了一个代码报错，求解是什么问题。感谢！

#include <iostream>

using namespace std;

template <typename T>
T min(T a, T b, T c) {
    return (a < b) ? ((a < c) ? a : c) : ((b < c) ? b : c);
}

int main() {
    int a = 3, b = 2, c = 1;
    cout << "Min of " << a << ", " << b << ", " << c << " is " << min(a, b, c) << endl;

    double x = 1.23, y = 2.34, z = 0.99;
    cout << "Min of " << x << ", " << y << ", " << z << " is " << min(x, y, z) << endl;

    return 0;
}

换个函数名吧，可能和库函数重名了

• 这个问题的回答你可以参考下: https://ask.csdn.net/questions/762821
• 这篇博客也不错, 你可以看下C/C++的“文件包含”处理时头文件被重复包含的问题探究及解决方法(用最简单的例子进行说明)
• 除此之外, 这篇博客: c++ 程序员打字游戏 代码 （不完善）求指教中的 这是我编的第一个游戏程序 跟着破站视频自己做的 （说来惭愧大三了）不能再堕落下去了！ 基本功能是可以实现的 但是没有做到完美 部分也许能够解决你的问题, 你可以仔细阅读以下内容或跳转源博客中阅读:
  

• #define  _CRT_SECURE_NO_WARNINGS
  #include <stdio.h>
  #include <time.h>
  #include <conio.h>
  #include <stdlib.h>
  #include <graphics.h> 
  #include <mmsystem.h>//为了加输入 成功音效
  #pragma comment(lib,"winmm.lib")//为了加输入 成功音效 但还是没有成功
  
  //数据设计
  //窗口属性
  const int width = 640;
  const int height =500;
  //游戏正确率和错误率
  int right = 0;
  int error = 0;
  //下坠文字的结构体
  struct target
  {  //每一个字符串的X,Y坐标
  	int x;
  	int y;
  	char *str;  //保存字符串
  };
  //用户输入的值
  struct USRKEY
  {
  	int x;
  	int y;
  	char str[20];
  }userkey = {320,500-40,""};
  //在指定位置输入整数
  void outtextxy_int(int x, int y, char *format, int num)
  {
  	char str[20] = "";
  	sprintf(str, format, num);
  	outtextxy(x, y, str);
  
  }
  //在指定位置输入浮点数
  void outtextxy_double(int x, int y, char *format, double num)
  {
  	char str[20] = "";
  	sprintf(str, format, num);
  	outtextxy(x, y, str);
  
  }
  //画界面分割线
  void divwindow()
  {
  	line(width - 100, 0, width - 100, height - 50);
  	line(0, height - 50, width + 50, height - 50);
  	line(width - 100, 130, width + 50, 130);
  
  }
  void inittarget(struct target words[], int n)
  {
  	static char str[29][10] = { "main","struct","int","static","char","switch","string","include",
  		"true","false","conin","graphics","stdlib","time","const","width","height","right","error",
  		"void","public","private","protect","sizeof","continue","short","else","union","default" };
  	//0--28
  	//随机产生
  	words[n].str = str[rand() % 29];
  	//0 1 2
  	//判断重复 如果重复 重新生成
  	// 与或非  &&   ||   ！
  	while (words[n].str == words[(n + 1) % 3].str || words[n].str == words[(n + 2) % 3].str)
  	{
  		words[n].str = str[rand() % 29];
  	}
  	words[n].x = rand() % (width - 150);
  	words[n].y = -20;
  
  };
  //信息输出显示
  void drawScore()
  {
  	settextcolor(LIGHTBLUE);
  	settextstyle(15, 0, "mingliub");
  	//文本信息输出
  	outtextxy(width - 90, 25, "我的");
  	outtextxy(width - 90, 25 + 25, "程序员打字游戏");
  	outtextxy(width - 90, 50 + 25, "c++第一个程序");
  	//游戏状态栏输出
  	outtextxy(width - 90, 225, "正确数：");
  	outtextxy_int(width - 90, 225 + 25, " % d ",right );
  
  	outtextxy(width - 90, 285, "错误数：");
  	outtextxy_int(width - 90, 285 + 25, " % d ",error);
  
  	outtextxy(width - 90, 285+285-225, "正确率");
  	//分类讨论
  	if (right + error == 0)
  	{
  		outtextxy_double(width - 90, 285 + 285 - 225 + 25, "%.2lf%%",0.0);
  	}
  	else
  	{
  		double sum = right + error;
  		outtextxy_double(width - 90, 285 + 285 - 225 + 25, "%.2lf%%", right / sum * 100);
  	}
  }
  
  //主程序
  int main()
  {
  	srand((unsigned int)time(NULL));
  	initgraph(width + 50, height - 20);
  	struct target words[3];
  	//产生随机掉落字符串
  	for (int n = 0; n < 3; n++)
  	{
  		inittarget(words, n);
  		words[n].y = -15-n*30;		//形成不等高
  	} 
  	int i = 0;
  	BeginBatchDraw();  //实现双缓冲 防止屏闪
  	while (1)
  	{
  		mciSendString("open yx.mp3 alias music", NULL, 0, NULL);
  		cleardevice();
  		divwindow();
  		//碰线处理
  		for (int n = 0; n<3;n++)
  		{
  			words[n].y += 2;
  			if (words[n].y > (height - 50 - textheight(words[n].str)))
  			{
  				inittarget(words, n);
  			}
  		}
  		//打印文字
  		for (int n = 0; n < 3; n++)
  		{
  			settextcolor(RED);
  			outtextxy(words[n].x, words[n].y, words[n].str);
  		}
  
  		if (_kbhit()) //检测键盘 如果有按键则返回非零 为真
  		{
  			 char usertarget;//接受用户的值
  			 if ((usertarget = _getch()) != ' ')
  			 {
  				 userkey.str[i++] = usertarget;	
  			 }
  			 else
  			 {
  				 int flagError=0;
  				 //干掉正确的字符
  				 for (i=0;i<3;i++)
  				 {
  					 if (strcmp(userkey.str, words[i].str) == 0)
  					 {
  						 inittarget(words, i);
  						 right++;
  						 flagError = 1;
  						 //下面这句 可以不加 我就是想实现成功的音效 但不能重复实现
  						 //只响了一声  之后就不知道怎么重复让音效响了
  						 mciSendString("play music ", NULL, 0, NULL);
  						 
  						
  					 }
  					 mciSendString("stop music", NULL, 0, NULL);
  				 }
  				 if (flagError == 0)
  				 {
  					 error++;
  				 }
  				 i = 0;		
  				 userkey.x = 320;
  				 memset(userkey.str, 0, 20);
  			 }	
  		}
  		outtextxy(userkey.x, userkey.y, userkey.str);
  		drawScore();
  		FlushBatchDraw();//实现双缓冲 防止屏闪
  		Sleep(60);
  	}
  	getchar();
  	closegraph();
  	return 0;
  }
  

  这是我代码的具体展示图片