blike​/intro​/demos

int x, y;
openWin(256, 256);
for (y = 0; y < 256; y++) {
    for (x = 0; x < 256; x++)
        setPix(x, y, rgb(x, y, 0));
}

int i;
setCol(0x0000ff);
setBCol(0xc6c6c6);
openWin(160, 144);
for (i = 0; i <= 60; i += 3)
    drawRect(19 + i * 2, 139 - i * 2, 71 - i, 3 + i);

struct POINT {
    int x, y;
};
static struct POINT t[16] = {
    { 196, 100 }, { 187,  61 }, { 164,  29 }, { 129,   9 }, {  90,   5 },
    {  53,  17 }, {  23,  44 }, {   7,  81 }, {   7, 119 }, {  23, 156 },
    {  53, 183 }, {  90, 195 }, { 129, 191 }, { 164, 171 }, { 187, 139 },
    { 196, 100 }
};
static int c[8] = {
    0x000000, 0xff0000, 0x00ff00, 0xffff00,
    0x0000ff, 0xff00ff, 0x00ffff, 0xffffff
};
int i, j, d;

openWin(200, 200);
setMode(BL_POR);
for (i = 0; i <= 14; i++) {
    for (j = i + 1; j <= 15; j++) {
        d = j - i; /* 2つの点の距離 */
        if (d >= 8) d = 15 - dis; /* 逆回りに数える */
        if (d != 0) {
            setCol(c[8 - d]);
            if (t[i].x <= t[j].x)
                drawLine(t[i].x, t[i].y, t[j].x, t[j].y);
            else
                drawLine(t[j].x, t[j].y, t[i].x, t[i].y);
        }
    }
}

int x, y;
openWin(256, 256);
for (y = 0; y < 256; y++) {
    for (x = 0; x < 256; x++)
        setPix(x, y, rgb(x, y, 0));
}
locate(13, 8);
color(7, 0);
printf("hello");