Fortran Calculator

I'm just learning Fortran while exploring the history of programming. This script is a part of my journey to understand how programming languages have evolved over time.

This is a simple calculator program written in Fortran. It supports basic arithmetic operations: addition, subtraction, multiplication, and division.

Usage

1. Compile the Fortran source code:

   gfortran -o calculator calculator.f90

2. Run the executable:

   ./calculator

3. Follow the prompts to enter two numbers and an operator.

Features

• Addition (+)
• Subtraction (-)
• Multiplication (*)
• Division (/)

Example

Fortran Calculator
Enter first number: 10
Enter second number: 5
Enter the operator (+ - * /): /
Result: 1.00

Notes

• Ensure that the second number is not zero when performing division to avoid division by zero errors.
• The program will display an error message for invalid operators.