Addition of two number using ‘-‘ operator

The task is to Add two number using ‘-‘ operator.

Examples:

Input : 2 3
Output : 5

Input : 10 20
Output : 30

The idea is simple, we subtract -b from a. 

C++

// CPP program to add two numbers using
// - operator.
#include <bits/stdc++.h>
using namespace std;

// function to add two numbers.
int add(int a, int b)
{
    return a - (-b);
}

// Driver code
int main()
{
    int a = 2, b = 3;
    cout << add(a, b) << endl;
    return 0;
}

Java

// Java program to add
// two numbers using
// - operator.
import java.io.*;

class GFG
{

// function to add two numbers.
static int add(int a, int b)
{
    return a - (-b);
}

// Driver code
public static void main (String[] args)
{
    int a = 2, b = 3;
    System.out.print(add(a, b));
}
}

// This code is contributed
// by chandan_jnu

Python3

# Python 3 program to add two numbers
# using - operator.

# Function to add two numbers
def add(a, b):

    return (a - (-b))


# Driver code
if __name__ == "__main__" :

    a = 2
    b = 3

    print(add(a, b))

# this code is contributed by Naman_Garg

C#

// C# program to add
// two numbers using
// - operator.
class GFG
{

// function to add two numbers.
static int add(int a, int b)
{
    return a - (-b);
}

// Driver code
static void Main()
{
    int a = 2, b = 3;
    System.Console.WriteLine(add(a, b));
}
}

// This code is contributed
// by mits

PHP

<?php
// PHP program to add two
// numbers using - operator.

// function to add two numbers.
function add($a, $b)
{
    return $a - (-$b);
}

// Driver code
$a = 2;
$b = 3;
echo add($a, $b);

// This code is contributed by mits
?>

Javascript

<script>

// Javascript program to add two numbers using
// - operator.

// Function to add two numbers.
function add(a, b)
{
    return a - (-b);
}

// Driver code
var a = 2, b = 3;

document.write(add(a, b));

// This code is contributed by itsok

</script>

Output:

5

Time complexity: O(1)
Auxiliary Space: O(1), As constant extra space is used.