Coders Packet

Large Number Factorial Calculator using C++

By Tanmay Ahuja

This project tells on how to calculate Factorial of large numbers using C++ that cannot be calculated through the calculator.

In this project, I have written a program with the help of which a person can calculate the factorial of large numbers which cannot be calculated with the help of a calculator.

Algorithm used:

1) As the numbers are very big so I have stored the numbers in an array instead of an integer variable.

2) Now for Calculating the factorial I multiply the individual elements of the array and when it exceeds a single digit I store it in another variable and I have added this variable to the start of the array. 

3) Finally I have printed the elements of the array and get the required factorial of the number.


The below image shows the output of the project after calculating the factorial of 678.

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