/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 vote141 views1 answer
For i in enumerate(3
C#
0 vote178 views1 answer
C# get every point in a line in matrix
C#
3 votes220 views1 answer
Scheduler
C#
0 vote216 views1 answer
C# sprint key
C#
3 votes288 views1 answer
Decimal sql how is on c#
C#
3 votes138 views3 answers
C# double to string format 6 decimal places
C#
6 votes184 views1 answer
Operator -- c#
C#
0 vote176 views1 answer
C# read all lines from filestream
C#
3 votes179 views1 answer
Initialization synonym
C#
0 vote218 views1 answer
C# words return first 20 items of array
C#