void gotoxy(int x,int y)//位置函数

{

    COORD pos;

    pos.X=x;

    pos.Y=y;

    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE),pos);

}

for(int i=;i<=;i++){

        gotoxy(i,);

        printf("%d ",i);

        Sleep();

        system("cls");//清屏

    }

#include <iostream>

#include <cstdio>

#include <windows.h>

#include<ctime>

#include <conio.h>

using namespace std;

char in() {

    char a;

    time_t timeBegin = time();

    int n=;

    while(true)  {           //the main loop  ||  主循环

        if(kbhit()){       //detect the keyboard  ||  kbhit检测键盘输，如果发现了输入

            a = _getch() ;

            return a;

        } else if(time()-timeBegin== && n==) {

            cout << "Your time have "<< <<" s"<< endl;//输出倒计时

            n=;

        }

        else if(time()-timeBegin== && n==) {

            cout <<  "Your time have "<<<<" s"<< endl;//输出倒计时

            n=;

        }

        else if(time()-timeBegin== && n==) {

            cout << "Your time have "<< <<" s"<< endl;//输出倒计时

            n=;

        }

        else if(time()-timeBegin>=){//时间过去30秒，进行其他操作

            timeBegin = time();

            n=;break;

//调用其他方法进行其他操作

        }

    }

}

int main(){

    cout<<in();

}