Arifmetik amallar

Ikkita butun son a va b hamda amal raqami N (1–4) berilgan: 1 — qo'shish, 2 — ayirish, 3 — ko'paytirish, 4 — butun bo'lish. Tanlangan amalni bajarib, natijani qaytaring.

func calculate(a int, b int, N int) int {
    // ...
}

Misollar

Input: a=10, b=5, N=1
Output: 15

Input: a=10, b=5, N=3
Output: 50

Input: a=10, b=5, N=4
Output: 2

Maslahatlar

1. switch N: 1 — a + b, 2 — a - b, 3 — a * b, 4 — a / b.
2. Butun sonlarda / butun bo'lishni bajaradi.