/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

0 vote181 views1 answer
Asp.net get query string parameter
C#
0 vote195 views1 answer
C# out argument
C#
3 votes277 views1 answer
Unity new Color()
C#Unity
7 votes184 views2 answers
Set focus ui unity
C#
2 votes180 views1 answer
Core Request.CreateResponse
C#
0 vote191 views1 answer
Fix Array outside the bonus
C#
1 vote199 views1 answer
Unity Rotate around the real center
C#
1 vote267 views1 answer
Google sheet script change text color
C#
0 vote210 views1 answer
Show Form on Second Monitor
C#
0 vote189 views1 answer
C# string is all zeros
C#