## DEV Community

NilufarBukhorova

Posted on • Updated on

# Data types

## Int :

short, long, int (butun sonlar);

## Real number :

float, double (kasr sonlar);

## Character :

char (belgilar).

• int age=14;
• cout << age + 5 * 26 << endl; (144)
• age= -15

## Declaration

• bu o'zgaruvchilarni e'lon qilish;
• int son;

## Assignment

• bu o'zgaruvchiga qiymat o'zgartirish;
• son=25;

## Initalization

• o'zgaruvchini e'lon qiish vaqtida birdaniga qiymat berish;
• int boshqason = 16;

### o'zgaruvchi nomi harflar, raqamlar va _ belgisidan iborat bo'lishi kerak.

• int a=5;
• int b=a;
• int c=a+b;

int a;
float b; int a,c;
int c; float b,d;
float d;

## Garbage value

• declaration kiritilsayu, o'zgaruvchi miqdori kiritilmasa councilda chiqadigan taxminiy sonlar
``````   int a= 123.45 --> 123
float a= 123 --> 123.00
``````

int vazn = (int)[majburlash] 120.123

int a=10;
int b= a+10;
int c= a+b;int d+ a+b+c;

a=b=c=d=60

## cin >>

• o'zgaruvchini o'qiydigan komanda

## char --> Ascii table

• char belgi= 'a'

• cout << (char) (belgi/3) << endl; [majburlash]

## iomanip

• input output manipulation, kutubxona

## setw()

• o'zgaruvchi uchun print qlishda bo'sh katakchalar so'raydi
• cout << setw(15) << son << endl; [by default right-aligned]
• cout << left << setw (15) << son << endl;

## setfill('')

setw() orqali ajratilgan yacheykalarni belgilar bn to'ldiradi.

• 24.16

## fixed

• setprecision komandasi birgalikda ishlatiladigan komanda bo'lib, uqta jooyida qolsin degan ma'noda keladi.

DEV Community

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What happens under the hood when Node.js works on tasks such as database queries? We will explore it by following this piece of code step by step.