本人用的是 easyx 图形库 vs2022，起初是想用 getch() 读取，结果发现读取一个信号后就只会有一个信号。

#include<stdio.h>
#include<graphics.h>
#include<conio.h>
#include <math.h>

#define x1Speed 1
#define y1Speed 1

struct Player {
	int x=0;
	int y=0;
}player1;

void initPlayer();
void player1Move(char m);

int main()
{
	initgraph(1048, 720);
	initPlayer();

	setbkcolor(RED);
	setfillcolor(BLUE);

	cleardevice();
	circle(player1.x, player1.y, 3);


	while (1) {
		player1Move(_getch());

		player1Move(_kbhit());
	}
	//关闭窗口，closegraph();
	return 0;
}
//位置坐标初始化
void initPlayer() {
	player1.x = 500;
	player1.y = 500;
}

//人物移动 z
void player1Move(char m) {
	if (m == 'd') {
		player1.x += x1Speed;
		circle(player1.x, player1.y, 3);
		player1.x += x1Speed;
		circle(player1.x, player1.y, 3);
		player1.x += x1Speed;
		circle(player1.x, player1.y, 3);
	}
	else if (m == 'a') {
		player1.x -= x1Speed;
		circle(player1.x, player1.y, 3);
		player1.x -= x1Speed;
		circle(player1.x, player1.y, 3);
		player1.x -= x1Speed;
		circle(player1.x, player1.y, 3);
	}
	else if (m == 'w') {
		player1.y -= y1Speed;
		circle(player1.x, player1.y, 3);
		player1.y -= y1Speed;
		circle(player1.x, player1.y, 3);
		player1.y -= y1Speed;
		circle(player1.x, player1.y, 3);
	}
	else if (m == 's') {
		player1.y += y1Speed;
		circle(player1.x, player1.y, 3);
		player1.y += y1Speed;
		circle(player1.x, player1.y, 3);
		player1.y += y1Speed;
		circle(player1.x, player1.y, 3);
	}
	else if (m == 'z') {
		closegraph();
		exit(0);
	}
}

Eureka

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