C++ | Variables and date types

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 height;
weight double;
float radius;

keywords

• int, double,float ...
  • cannot use as identifiers.

Assignment

• bu o'zgaruvchiga qiymat o'zgartirish;

son=25;

Initalization

• o'zgaruvchini e'lon qiish vaqtida birdaniga qiymat berish;

int 6 = 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