Intro To C++/Playing with operator

Basic Math

C++ can be used to do basic math. The operators used in the basic math are listed in the table below.

Operator		Operation
Arithmetic Operator	$+$	addition
	$-$	Subtraction
	$*$	Multiplication
	$/$	Division
	$\mathrm{\%}$	Modulus
	$++$	Increment
	$--$	Decrement
Assignment Operator	$=$	"$a=b$" is equivalent to "$a=b$"
	$+=$	"$a+=b$" is equivalent to "$a=a+b$"
	$-=$	"$a-=b$" is equivalent to "$a=a-b$"
	$*=$	"$a*=b$" is equivalent to "$a=a*b$"
	$/=$	"$a/=b$" is equivalent to "$a=a/b$"
	$\mathrm{\%}=$	"$a\mathrm{\%}=b$" is equivalent to "$a=a\mathrm{\%}b$"
Comparison Operator	$==$	Equality
	$!=$	Inequality
	$>$	Greater than
	$<$	Less than
	$>=$	Greater than or equal to
	$<=$	Less than or equal to
Logical Operator	$\mathrm{\&}\mathrm{\&}$	Logical AND
	$||$	Logical OR
	$!$	Logical NOT

Basic math operators in C++ have some distinguishing features:

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Part of Basic math operation is demonstrated in the C++ program below:

#include <iostream>;
using namespace std;

int main{
 int a=4, b=9, c=0;
 cout << "Addition result(a+b):"<<(a+b)<< endl;
 cout << "Multiplication result(a*b):"<<(a*b)<< endl;
 cout << "Multiplication & assign: a *=b(4*9) a="<< a*=b << endl;
 cout << "lesser comparision: a < b "<< (a<b) << "true"<< endl;
 cout << "And logic: (a && a)" << (a && a) << "(true)" << endl; 
}

Checking Size

The memory size of any variable can be discovered using the C++ sizeof operation.The sizeof operator syntax is look like this:

sizeof(var)

The sizeof operator is demonstrated in the program as follows:

#include <iostream>
using namespace std;

int main(){
}

Casting Data Types

Any data-types except "string" could be converted to another data type through "casting". Casting syntax in C++ looks like this:

variable-name=static-cast <data-type> variable-name

Casting with C++ form is demonstrated in the program as follows:

#include <iostream>
using namespace std;

int main(){
}