C++

#include <iostream>

int main()
{
    // one line comment

    /**
     * multi -line blck comment
     * antother line
     * oh! another one!
     */
    auto result = (10 <=> 20) > 0;
    std::cout << result << std::endl;
    std::cout << "Number1";
    std::cout << "Hello World!" << std::endl;
}

data types

c++ stream	purpose
std::cout	printing data to the console
std::cin	reading data from the terminal
std::cerr	printing errors to the console
std::clog	printing log messages to the console

C++ Operator Precedence

compile-time concepts

Precedence	Operator	Description	Associativity
1	::	Scope resolution	Left-to-right →
2	a++ a--	Suffix/postfix increment and decrement
	type() type{}	Functional cast
	a()	Function call
	a[]	Subscript
	. ->	Member access
3	++a --a	Prefix increment and decrement	Right-to-left ←
	+a -a	Unary plus and minus
	! ~	Logical NOT and bitwise NOT
	(type)	C-style cast
	*a	Indirection (dereference)
	&a	Address-of
	sizeof	Size-of[note 1]
	co_await	await-expression (C++20)
	new new[]	Dynamic memory allocation
	delete delete[]	Dynamic memory deallocation
4	.* ->*	Pointer-to-member	Left-to-right →
5	a*b a/b a%b	Multiplication, division, and remainder
6	a+b a-b	Addition and subtraction
7	<< >>	Bitwise left shift and right shift
8	<=>	Three-way comparison operator (since C++20)
9	< <= > >=	For relational operators < and ≤ and > and ≥ respectively
10	== !=	For equality operators = and ≠ respectively
11	a&b	Bitwise AND
12	^	Bitwise XOR (exclusive or)
13	\|	Bitwise OR (inclusive or)
14	&&	Logical AND
15	\|\|	Logical OR
16	a?b:c	Ternary conditional[note 2]	Right-to-left ←
	throw	throw operator
	co_yield	yield-expression (C++20)
	=	Direct assignment (provided by default for C++ classes)
	+= -=	Compound assignment by sum and difference
	*= /= %=	Compound assignment by product, quotient, and remainder
	<<= >>=\|	Compound assignment by bitwise left shift and right shift
	&= ^= \|=	Compound assignment by bitwise AND, XOR, and OR
17	,	Comma	Left-to-right →

C++ output formatting

Code Examples

• Variables Examples
• Output Formatting
• Math Operations