SIMPLE COMMAND LINE INTERFACE ADDITION CALCULATOR IN 10 DIFFERENT PROGRAMMING LANGUAGES

Below is the code in 10 different programming languages (Java, C++, Python, Ruby, C#, Lua, Go, C, JavaScript and PHP) of an addition calculator that runs from Command Line Interface (CLI). In all the languages except JavaScript, the user will provide the operands.

JAVA

import java.util.Scanner;

public class Addition{

 public static void main(String args[]){

  //declare variables

  int firstNumber, secondNumber, sum;

 

  //declare Scanner object for getting input values

  Scanner input = new Scanner(System.in);

 

  //get the first number

  System.out.print("Enter First Number: ");

  firstNumber = input.nextInt();

 

  //get the second number

  System.out.print("Enter Second Number: ");

  secondNumber = input.nextInt();

 

  //compute the result

  sum = firstNumber + secondNumber;

 

  //display the result

  System.out.println("the sum of " + firstNumber + " and "

       + secondNumber + " is " + sum);

 }

}

C++

#include <iostream>

using namespace std;

int main(){

 //declare variables

 int firstNumber, secondNumber, sum;

 //get the first nyumber

 cout << "Enter First Number: ";

 cin >> firstNumber;

 //get the second number

 cout << "Enter Second Number: ";

 cin >> secondNumber;

 //compute the result

 sum = firstNumber + secondNumber;

 //display the result

 cout << "the sum of " << firstNumber << " and " << secondNumber << " is " << sum << endl;

 return 0;

}

PYTHON

#get the first nyumber

firstNumber = input("Enter First Number: ")

#get the second nyumber

secondNumber = input("Enter Second Number: ");

#wrap the numbers to integer and compute the result

total = int(firstNumber) + int(secondNumber)

#display the result

print("the sum of ", firstNumber, " and ", secondNumber, " is ", total);

RUBY

print "Enter First Number: "

firstNumber = gets.chomp #get the first number and remove the newline character

print "Enter Second Number: "

secondNumber = gets.chomp #get the second number and remove the newline character

#compute the result after converting the user inputed numbers to integer

sum = firstNumber.to_i + secondNumber.to_i

#display the result

print "the sum of " + firstNumber.to_s + " and " + secondNumber.to_s + " is " + sum.to_s + "\n"

C#

using System;

class Addition{

 static void Main(){

  //declare string to hold user inputs

  string input;

  //declare integer variavles to hold values

  int firstNumber, secondNumber, sum;

 

  //get the first number

  Console.Write("Enter First Number: ");

  input = Console.ReadLine(); //get user input

  firstNumber = int.Parse(input); //convert user input to integer

 

  //get the second number

  Console.Write("Enter Second Number: ");

  input = Console.ReadLine(); //get user inout

  secondNumber = int.Parse(input); // convert user input to integer

 

  //compute the result

  sum = firstNumber + secondNumber;

 

  //display the result

  Console.WriteLine("the sum of " + firstNumber + " and " + secondNumber

       + " is " + sum);

 }

}

LUA

--get first number

io.write("Enter first number: ")

firstNumber = io.read("*n")

--get second number 

io.write("Enter second Number: ")

secondNumber = io.read("*n")

--calculate the sum

sum = firstNumber + secondNumber

io.write("The sum of ", firstNumber, " and ", secondNumber, " is ", sum, "\n")

GO

package main

import "fmt"

func main(){

 var firstNumber int

 var secondNumber int

 var sum int

 fmt.Print("Enter First Number: ")

 fmt.Scanf("%d", &firstNumber)

 fmt.Print("Enter Second Number: ")

 fmt.Scanf("%d", &secondNumber)

 sum = firstNumber + secondNumber

 fmt.Println("the sum of ", firstNumber, " and ", secondNumber, " is ", sum)

}

C

#include <stdio.h>

int main(){

 //declare variables

 int firstNumber, secondNumber, sum;

 //get the first number

 printf("Enter First Number: ");

 scanf("%d", &firstNumber);

 //get the second number

 printf("Enter Second Number: ");

 scanf("%d", &secondNumber);

 //compute the result

 sum = firstNumber + secondNumber;

 //display the result

 printf("the sum of %d and %d is %d", firstNumber, secondNumber, sum);

 return 0;

}

JAVASCRIPT

var firstNumber, secondNumber, sum;

firstNumber = 10;

secondNumber = 22;

sum = firstNumber + secondNumber;

console.log("the sum of " + firstNumber + " and " + secondNumber + " is " + sum);

PHP

<?php

$fp = fopen("php://stdin","r");

//declare variables

$firstNumber = $secondNumber = $sum = 0;

//get the first number

echo "Enter First Number: ";

$firstNumber = rtrim(fgets($fp));

//get the second number 

echo "Enter Second Number: ";

$secondNumber = rtrim(fgets($fp));

//compute the result

$sum = $firstNumber + $secondNumber;

//display the result 

print("the sum of ".$firstNumber." and ".$secondNumber." is ".$sum."\n");

?>