WEBVTT

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Komputerlarning yaxshi jihatlaridan biri bu buyruqlarni qayta bajarishi.

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Inson sifatida, agar siz bir xil narsani ko‘p marta qilishingiz kerak bo‘lsa, 

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haqiqatda zerikib ketasiz.

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Ammo komputer bir xil narsani million yoki hattoki
milliard marta ham qila oladi, 

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va zerikmasdan yaxshi holatda bu ishni oxirigacha yetkazib qo‘ya oladi.

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Shunday qilib, misol uchun, agar men <i>Facebook</i>dagi barcha foydalanuvchini 

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<i>email</i> jo‘natib tug‘ilgan kuni bilan tabriklashni xohlasam, 

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bu <i>email</i>larni barchaga yozib jo‘natish uchun 

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menda bir asrdan ko‘p vaqt ketadi.

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Lekin bir necha qator kod bilan, men <i>Facebook</i>dagi 
barchaga tug‘ilgan  

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kuni bilan tabriklab <i>email</i> yuboradigan
tizim yarata olaman.

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Mana <i>loop</i> - sikllar nima va nima uchun ular ahamiyatli.

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Ular kompyuterlar juda yaxshi bajara oladigan narsalardan biri.

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Bu misolda, sizning maqsadingiz qushni cho‘chqaga yetishi 

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uchun harakatlantirish. Biz buni juda ham oson bajarish uchun

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"<i>repeat</i>" blokidan foydalana olish imkoniyatiga egamiz. Siz buni 

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har safar qushni cho‘chqaga qaratib bir qadam yaqinlashtirish uchun 

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komputerga besh marta "<i>move forward</i>" buyug‘ini berish orqali ham bajarishingiz mumkin.

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Yoki siz komputerga shunchaki bir marta oldinga harakatlanishini aytib, 

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va keyin unga bu ishni 5 marta qaytarishni aytishingiz mumkin
va u xuddi shunday qiladi.

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Shunday qilib, buni qilish uchun siz "<i>move forward</i>" buyrug‘ini olib, 

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uni "<i>repeat</i>" bloki ichiga joylaysiz.

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Bu yerga bosib, qancha qadam oldinlashini xohlashingizni

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aytish uchun blokni necha marta qaytarishini ayta olasiz.
Endi yana bir narsa 

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siz <i>repaat </i> bloki ichiga 
istalgancha ko‘p buyruqlarni qo‘ya olasiz.

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Masalan, bu yerda siz unga besh marta 

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oldinga harakatlanish va chapga burilishni aytayapsiz.
Xo‘sh... 

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Ajoyib! Zavq oling :-)