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");
?>
