Ruby - Calculate the Sum of Two Numbers

1. Introduction

Calculating the sum of two numbers is a foundational concept in programming and serves as a great introduction to the Ruby language for beginners. This simple task helps in understanding user input, variable usage, and output display. Let's walk through a Ruby program that accomplishes this.

2. Program Steps

1. Start your Ruby development environment.

2. Prompt the user to input two numbers.

3. Convert the user input from string format to an integer or floating point, depending on the requirement.

4. Calculate the sum of the two numbers.

5. Display the result to the user.

3. Code Program

# Prompting the user for the first number
puts "Enter the first number:"
num1 = gets.chomp.to_f
# Prompting the user for the second number
puts "Enter the second number:"
num2 = gets.chomp.to_f
# Calculating the sum of the two numbers
sum = num1 + num2
# Displaying the result
puts "The sum of #{num1} and #{num2} is: #{sum}"

Output:

Enter the first number:
5.5
Enter the second number:
6.5
The sum of 5.5 and 6.5 is: 12.0

Explanation:

1. puts: This method is used to display messages to the console. It is used here to prompt the user to enter numbers.

2. gets: This is used to get user input. By default, it reads the input as a string.

3. chomp: This method is applied to the string input to remove the newline character (which is added when the user presses Enter).

4. to_f: This method converts a string to a floating-point number. If you're only working with integers, you could use to_i instead.

5. sum = num1 + num2: This line calculates the sum of the two numbers provided by the user.


Related Ruby Examples:

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Ruby Tutorials

Ruby Hash Tutorial Ruby String Tutorial Ruby Array Tutorial Ruby - Match a Pattern in a String Ruby - map Function Example Ruby - reduce Function Example Ruby - select Function Example Ruby - Date and Time Example Ruby - Create and Execute a Basic Thread Ruby - Main Thread and Sub-threads Ruby - Pause Execution of Thread Using sleep Ruby - Terminate a Thread Using Thread.kill Ruby - Check Status of a Thread Using alive? Ruby - Thread Priority Example Ruby - Use Thread.pass for Thread Scheduling Ruby - Thread Local Variables Ruby Convert String to Hash Ruby Convert String to JSON Ruby Convert String to Integer Ruby Convert String to Array Ruby Convert String to Date Ruby Convert String to CamelCase Ruby Convert String to Boolean Ruby Convert String to Float Ruby Convert String to DateTime Ruby Convert Number to String Ruby Convert Number to Binary Ruby Convert Number to Boolean Ruby Convert List to Set Ruby Convert List to String Ruby Convert List to Hash Ruby Convert List to Map Ruby Convert Array to List Ruby Convert Array to Hash Ruby Convert Array to Hash With Index as Key Ruby Convert Array to Set Ruby Convert Array to String Comma Separated Ruby Convert Array of Strings to Integers Ruby Convert Array to JSON Ruby Convert Array of Hashes to JSON Ruby Convert Hash to JSON Ruby Convert Hash to String Ruby Convert Hash to Array Convert Hash Keys to Strings Ruby Convert Date to DateTime Ruby Convert Date to Epoch Ruby Convert Date to TimeStamp Ruby Convert Date to Milliseconds

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