C++ dasturlash tili

Bu dasurlash tili C tilida kelib chiqqan. G++ kompilyator o'rnatamiz. main.cpp fayl yaratamiz

#include<iostream>
using namespace std;

int main(){
	cout<<"Hello world"<<endl;
	return 0;
}

terminal(consol)ga yozamiz g++ main.cpp (yoki g++ main.cpp -o main) teramiz chiquvchi fayl a.out (yoki main) bo'ladi. Dasturni ishga tushirish uchun ./a.out (yoki ./main) terib ishga tushiramiz Hello world ekranga chiqadi.

const int number = 1; // konstanta o'zgarmas son

#include<string>

string name = "Adxamjon" // satrli o'zgaruvchi

cout<<name;

name.size();	// satr o'lchami
name.length();	// bu ham

getline(cin, name); // uzun satr qabul

#include <cmath>

cout << sqrt(64); 	// ildizini husobleydi
cout << round(2.6); // yahlitlash
cout << log(2); 	// logarifmi

funksya	ma'nosi
abs(x)	x ning absolyut qiymati
acos(x)	x ning arccosinus
asin(x)	x ning arcsinusi
atan(x)	x ning arctg
cbrt(x)	Returns the cube root of x
ceil(x)	x ni yuqoriroqga yahlitlaydi
cos(x)	x cosinus
cosh(x)	Returns the hyperbolic cosine of x
exp(x)	Returns the value of Ex
expm1(x)	Returns ex -1
fabs(x)	Returns the absolute value of a floating x
fdim(x, y)	Returns the positive difference between x and y
floor(x)	x ni kichik qiymat bilan yahlitleydi
hypot(x, y)	sqrt(x2 +y2) gipatinuzasi
fma(x, y, z)	Returns x*y+z without losing precision
fmax(x, y)	Returns the highest value of a floating x and y
fmin(x, y)	Returns the lowest value of a floating x and y
fmod(x, y)	Returns the floating point remainder of x/y
pow(x, y)	x ni y-darajasi
sin(x)	Returns the sine of x (x is in radians)
sinh(x)	Returns the hyperbolic sine of a double value
tan(x)	Returns the tangent of an angle
tanh(x)	Returns the hyperbolic tangent of a double value