/C#/Find sum of multiples of a number up to N

Find sum of multiples of a number up to N

How to find sum of two nums

#include<stdio.h>
int main() {
int a, b, sum;
printf("\nEnter two no: ");
scanf("%d %d", &a, &b);
sum = a + b;
printf("Sum : %d", sum);
return(0);

Find sum of multiples of a number up to N

// C# program to find sum of multiples
// of a number up to N efficiently
using System;
 
class GFG {
 
    // Function for calculating sum
    // of multiples of a upto N
    static int calculate_sum(int a, int N)
    {
 
        // Number of multiples
        int m = N / a;
 
        // sum of first m natural numbers
        int sum = m * (m + 1) / 2;
 
        // sum of multiples
        int ans = a * sum;
 
        return ans;
    }
 
    // Driver code
    public static void Main()
    {
 
        int a = 7, N = 49;
        Console.WriteLine("Sum of multiples of " + a +
         " up to " + N + " = " + calculate_sum(a, N));
    }
}

Source: geeksforgeeks.org

Similar codes

26 votes250 views2 answers
Declare dictionary c#
C#
9 votes294 views3 answers
Get rigidbody component unity
C#Unity
1 vote267 views1 answer
Action being performed on this control is being called from the wrong thread c#
C#
0 vote262 views1 answer
C# textbox kodu
C#
9 votes297 views1 answer
Unity delete specific text in a string
C#Unity
0 vote300 views1 answer
Mvc invalidOperationException: Method 'InvokeAsync' of view component should be declared to return Task<t>
C#
0 vote285 views1 answer
The same schemaid is already used for type swagger
C#
3 votes311 views1 answer
How to make an object invisible unity
C#Unity
0 vote259 views1 answer
C# streamreader to file
C#
0 vote253 views1 answer
C# asqueryable select
C#