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for (let i = 0; i <= GRID; i++) {
ctx.beginPath();
ctx.moveTo(i * CELL, 0); ctx.lineTo(i * CELL, canvas.height);
ctx.stroke();
ctx.beginPath();
ctx.moveTo(0, i * CELL); ctx.lineTo(canvas.width, i * CELL);
ctx.stroke();
}
// food — pulsing node
const foodPulse = 2 + Math.sin(Date.now() / 180) * 1.5;
ctx.fillStyle = '#ffb454';
ctx.shadowColor = '#ffb454';
ctx.shadowBlur = 12;
const fx = food.x * CELL + CELL / 2;
const fy = food.y * CELL + CELL / 2;
ctx.beginPath();
ctx.arc(fx, fy, CELL / 3 + foodPulse * 0.4, 0, Math.PI * 2);
ctx.fill();
ctx.shadowBlur = 0;
// snake
snake.forEach((seg, i) => {
const t = 1 - i / snake.length;
const isHead = i === 0;
ctx.fillStyle = isHead ? '#b9ffe0' : `rgba(62, 242, 160, ${0.45 + t * 0.5})`;
ctx.shadowColor = '#3ef2a0';
ctx.shadowBlur = isHead ? 10 : 4;
const pad = isHead ? 1 : 1.5;
ctx.fillRect(seg.x * CELL + pad, seg.y * CELL + pad, CELL - pad * 2, CELL - pad * 2);
});
ctx.shadowBlur = 0;
if (pulse > 0) pulse--;
}
function restartTimer() {
clearInterval(timer);
timer = setInterval(step, tickMs);
}
function loop() {
draw();
requestAnimationFrame(loop);
}
startBtn.addEventListener('click', () => {
reset();
overlay.classList.remove('show');
restartTimer();
});
reset();
draw();
loop();
})();
</script>
</body>
</html>
Write any game using HTML/CSS-
Please provide the code for each language: C, C++, and C#. about the different things you choose-I'll give you three small programs — one per language — each demonstrating some characteristic features of that language, so you can compare their style side by side.
## C
```c
#include <stdio.h>
#include <stdlib.h>
// C is procedural: no classes, manual memory management.
typedef struct {
char name[32];
int age;
} Person;
void greet(const Person *p) {
printf("Hello, %s! You are %d years old.\n", p->name, p->age);
}
int main(void) {
// Manual allocation on the heap
Person *people = malloc(2 * sizeof(Person));
if (!people) return 1;
snprintf(people[0].name, sizeof(people[0].name), "Alice");
people[0].age = 30;
snprintf(people[1].name, sizeof(people[1].name), "Bob");
people[1].age = 25;
for (int i = 0; i < 2; i++) {
greet(&people[i]);
}
free(people); // must free manually — no garbage collector
return 0;
}
```
## C++