/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

1 vote175 views1 answer
C# public static string
C#
0 vote235 views4 answers
How to integrate a c# and angular 9
C#
0 vote174 views1 answer
C# compress string
C#
0 vote172 views1 answer
UPA Error
C#
1 vote244 views1 answer
Unity getcomponent not working on ui
C#Unity
0 vote181 views1 answer
Unity magnetize a 3d object to cursor
C#
9 votes236 views1 answer
Unity get layer of gameobject
C#Unity
1 vote174 views1 answer
Space custom inspector
C#
0 vote171 views1 answer
Write last element of dictionary c#
C#
1 vote194 views1 answer
C# new line in messagebox
C#