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{
    # include<stdio.h>
    # include<graphics.h>
    # include<math.h>
    # include<conio.h>
    # definePI 3.1415926 
    //绘制心形线的函数
    void  cardioid( int x, int y, int a)
    //x: x方向上的偏移量/
    /y: y方向上的偏移量
    //a: 缩放倍数
    {
    intx1, y1, x2, y2;
     doubleangle = 0; 
    while(angle <= 2* PI)
     {
    x1 = a * ( 2* sin(angle) + sin( 2* angle)) + x; 
    y1 = a * ( 2* cos(angle) + cos( 2* angle)) + y; 
    angle += (PI / 180); 
    x2 = a * ( 2* sin(angle) + sin( 2* angle)) + x;
     y2 = a * ( 2* cos(angle) + cos( 2* angle)) + y;
     line(x1, y1, x2, y2);Sleep( 5); 
    }
    }
    int main( void) 
    {initgraph( 960, 540); 
    setlinecolor(RGB( 255, 0, 0)); 
    cardioid( 480, 270, 50);
     int ret = getch; 
    closegraph;
    return 0;
     }
    }
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{
    printf("Hello World！");
    return 0;
}

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