README.md

BigNumber

It is a class that is useful for dealing with realy big numbers. We can define numbers as integer or fractional with thausands of digits and do math operations same as basic variables.

Credits

This repo is compiled by Makan Edrisi

Table of content

• Class members
• Documentation
• How to use with example

Class Members

• add(BigNumber b) or operator +
• sub(BigNumber b) or operator -
• mul(BigNumber b) or operator *
• mul_10(size_type n)
• div(BigNumber b) or operator /
• get_string()
• get_sign()
• inc() or operator ++
• dec() or operator --
• max_div_digits
• set () or operator =
• set_to_zero()

Documentation

Class members implementation documented by Doxygen. It is available here

How to use

By adding "BigNumber.h" and "BigNumber.cpp" to a project we can define BigNumber variables like regular int or double variables. The example below shows how it works:

#include "stdafx.h"
#include <iostream>
#include "BigNumber.h"

using namespace System;

int main()
{
	BigNumber x,y,z;
	x = "100"; //set number by string
	y = 2.5; //set number by double
	std::cout << "x + y =" << x + y << std::endl; //add method
	std::cout << "x - y =" << x - y << std::endl; //sub method
	std::cout << "x * y =" << x * y << std::endl; //mul method

	z = 3; //set by intiger
	x.max_div_digits = 1000; //continue dividing up to 1000 decimal digits
	std::cout << "x / z =" << x / z << std::endl; //div method

	if (x > y) std::cout << x << " is bigger than " << y << std::endl; //comparing operator
	if (z != y) std::cout << z << " is not equal to " << y << std::endl; 

    return 0;
}