This is a command-line interface (CLI) tool written in Go that calculates the factorial of a given integer.

To use the factorial CLI, follow the instructions below:

1. Clone the repository:

   git clone [email protected]:wantaekchoi/factorial-go.git
   

2. Navigate to the project directory:

   cd factorial-go
   

3. Build the CLI tool:

   go build -v ./...
   

4. Run the CLI tool with the desired number and options:

   ./factorial-go -number <number> -base <base>
   

   Replace <number> with the integer value for which you want to calculate the factorial. Replace <base> with the desired number base for the input (default is 10).

   Examples:

   • Calculate the factorial of 5 (base 10):

     ./factorial-go -number 5
     

   • Calculate the factorial of FF (base 16):

     ./factorial-go -number FF -base 16
     

5. The factorial of the given number will be displayed.

The following options are available:

• -number, -n: Integer value to calculate factorial (required).
• -base, -b: Number base for the input (default: 10).