Snail problem

Question

Every day the snail crawls 7 feet up and every night it goes down 2 feet.
How many days will it take for a snail to climb to the specified height?

Answer 1

Alim Niyazov Where is your attempts?

Answer 2

https://code.sololearn.com/cCpc2SlHCnBS/?ref=app

Here's something similar using recursion

Answer 3

function climb() {
var height = parseInt(readLine(), 10);

let days = 0;
if (height<= 0) return days;
for (let i = 0; ; i -= 2) {
i += 7;
++days;
if (i >= height) break;
i -= 2
}
return days;
}

console.log(climb(days));

Answer 4

I just don't understand what's wrong with my code?