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Program to find the Discount Percentage

  • Last Updated : 18 May, 2021

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:  

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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 contribute 
# 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%

 




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