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Program to find the Discount Percentage

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  • Last Updated : 28 Aug, 2022
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Given Marked Price M      and Selling price as S      of a product. The task is to calculate the Discount Percentage applied to that product.

Examples:  

Input: M = 120, S = 100
Output: 16.66%

Input: M = 1000, S = 500
Output: 50% 

The mathematical formula to calculate the Discount Percentage for the product is: 

Discount = Marked Price - Selling price

Therefore,
Discount Percentage = (Discount / Marked Price) * 100

Below is the program to find the discount percentage for a product:  

C++




// CPP Program to find the Discount Percentage
 
#include <bits/stdc++.h>
using namespace std;
 
// Function to find the Discount Percentage
float discountPercentage(float S, float M)
{
    // Calculating discount
    float discount = M - S;
 
    // Calculating discount percentage
    float disPercent = (discount / M) * 100;
 
    return disPercent;
}
 
// Driver code
int main()
{
    int M, S;
    M = 120;
    S = 100;
     
    // Setting the precision to 2 decimals
    cout << std::fixed << std::setprecision(2)
        << discountPercentage(S, M) << "%" << endl;
 
    M = 1000;
    S = 500;
     
    // Setting the precision to 2 decimals
    cout << std::fixed << std::setprecision(2)
        << discountPercentage(S, M) << "%" << endl;
 
    return 0;
}

Java




// Java Program to find the Discount Percentage
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
class GFG{
  
// Function to find the Discount Percentage
static float discountPercentage(float S, float M)
{
    // Calculating discount
    float discount = M - S;
  
    // Calculating discount percentage
    float disPercent = (discount / M) * 100;
  
    return disPercent;
}
  
// Driver code
public static void main(String args[])
{
    int M, S;
    M = 120;
    S = 100;
 
    System.out.printf("%.2f",discountPercentage(S,M));
    System.out.println("%");
     
  
    M = 1000;
    S = 500;
 
   System.out.printf("%.2f",discountPercentage(S,M));
    System.out.println("%");
}
}

Python3




# Python3 Program to find the
# Discount Percentage
 
# Function to find the
# Discount Percentage
def discountPercentage(S, M):
 
    # Calculating discount
    discount = M - S
 
    # Calculating discount percentage
    disPercent = (discount /M) * 100
 
    return disPercent
 
 
# Driver code
if __name__=='__main__':
    M = 120
    S = 100
 
    print(discountPercentage(S, M), "%")
 
    M = 1000
    S = 500
 
    print(discountPercentage(S, M), "%")
 
# This code is contributed
# by ihritik

C#




// C# Program to find the
// Discount Percentage
using System;
 
class GFG
{
 
// Function to find the
// Discount Percentage
static float discountPercentage(float S,
                                float M)
{
    // Calculating discount
    float discount = M - S;
 
    // Calculating discount percentage
    float disPercent = (discount / M) * 100;
 
    return disPercent;
}
 
// Driver code
static public void Main ()
{
    int M, S;
    M = 120;
    S = 100;
 
    Console.Write(discountPercentage(S, M));
    Console.WriteLine("%");
     
    M = 1000;
    S = 500;
 
    Console.Write(discountPercentage(S, M));
    Console.Write("%");
}
}
 
// This code is contributed by Raj

PHP




<?php
// PHP Program to find the
// Discount Percentage
 
// Function to find the
// Discount Percentage
function discountPercentage($S, $M)
{
    // Calculating discount
    $discount = $M - $S;
 
    // Calculating discount percentage
    $disPercent = ($discount /$M) * 100;
 
    return $disPercent;
}
 
// Driver code
$M; $S;
$M = 120;
$S = 100;
 
echo discountPercentage($S, $M), "%", "\n";
 
$M = 1000;
$S = 500;
 
echo discountPercentage($S, $M), "%", "\n";
 
// This code is contribute
// by inder_verma
?>

Javascript




<script>
 
// Java Script Program to find the Discount Percentage
 
 
  
// Function to find the Discount Percentage
function discountPercentage( S,  M)
{
    // Calculating discount
    let discount = M - S;
  
    // Calculating discount percentage
    let disPercent = (discount / M) * 100;
  
    return disPercent;
}
  
// Driver code
 let M, S;
    M = 120;
    S = 100;
 
    document.write(discountPercentage(S,M).toFixed(2));
    document.write("%");
    document.write("<br>");
  
    M = 1000;
    S = 500;
 
    document.write(discountPercentage(S,M).toFixed(2));
    document.write("%");
 
// Contributed by sravan kumar
</script>

Output: 

16.67%
50.00%

 

Time Complexity: O(1), since there is no loop or recursion.
Auxiliary Space: O(1), since no extra space has been taken.


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