c++ dan 1-dars haqida qisqacha ma'lumot

botirjon - Aug 8 - - Dev Community

c++ da 1- organgan narsamiz bu kutin hona chaqirish.1- kutubhonamiz esa #include kutib honasi.

#include <iostream>
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kutib honadan song esa int main() kiritiladi bu kod consilga chiqarib berish bajaradi.

int main()

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int main hardoyim shu 2 belgi bilan birga keladi() va {}.
() bu main orqasidan yani shu holtda bo'ladi.

 main()
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int maining chegarasi bo'ladi.Chegara begilari esa {} shu lar.
Agarda kodni shu belgilar {} orasiga yozilamsa kod consilga chiqmaydi.Har doyim {} shu ikki belgi orasiga yozilishi kerak

int main() {

}
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int maindan song std va cout yoziladi bu ham codni consilga chiqarib beradigan kodlardan biri.Cout har doyim << shu belgilar bilan yoziladi.

#include <iostream>
int main() {
   std::cout <<

}

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Biz hardoyim std ni chaqirib qiynalmasligmiz uchun c++da.

#include <iostream>
using namespace std;

shunday codlar mavjud
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int maining ichiga cod yozyapganimizda turli qadorlda yoza mizz lekin consilga bir qatorda qilib chiqarib beradi.Consilga keyiga qotorda chiqarib beradigan amal bu \n va endl.

#include <iostream>
using namespace std;
int main() {
   cout << "Salom\n";
   cout << "Salom"<< endl;

}

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Endl bilan \n ni ham o'zga yarasha qulaylilari va ishlatish turlari bor.Agarda consildagi codni keyingi qatorga o'qazish uchun endlidan foydalansak

#include <iostream>
using namespace std;
int main() {

   cout << "Salom"<< endl;

}

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Agarda consildagi kodni \n bilan keyingi qatorga o'qazish uchun esa.

#include <iostream>
using namespace std;
int main() {
   cout << "Salom\n";

}

shunday holda yoziladi
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Endl va \n ning farqi.\n coutga ko'p qatorlik int yani butun son kiritilsa faqatgina konsilga birinchi qatorini alohida qilib qolgan qismini esa qoshib chiqarib beradi yani \n hardoyim ham butun sonlarga 100% ishlab bera olmayi.\n faqatgina str yanai text lar uchun 100% ishlab bera oladi.Endl esa buna musta sino yani endl str dan ham int ham 100% ishlab bera oldi.

#include <iostream>
using namespace std;
int main() {
   cout << "Salom"<< endl;
   cout << 1234 << endl;
   cout << 1234 << endl;

hatoki endl shu holada ham ishlaydi

}

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