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While loop

while ham for operatoriga o'xshab takrorlanadigan yoki aylanadigan amallarni bajarish uchun foydalaniladi. Farqi shundaki, for operatoridan foydalanganimizda biz amal(lar)ni qancha aylanishini belgilaymiz. while bilan yozganimizda esa, qachongacha aylanishini belgilaymiz.

Foydalanish

python
a = input("a = ")

a = int(a)

while a != 3:
    print(a)
    a = a * 2
    a = a % 4

Yuqoridagi kodda a o'zgaruvchisining qiymati 3 ga teng bo'lguncha while ichidagi amallar bajariladigan dastur yozilgan.