(C Language) (ENG) Multiples Of 3 And 5 - Project Euler Problem 1

PROBLEM

Write a program calculating summation of (multiples of 3 or 5).

This c problem is taken by me from: (https://projecteuler.net/problem=1)

SAMPLE RUN:

In addition to problem, i printed result on the screen.

SOLUTION

You can copy codes below to your compiler to execute.

#include <stdio.h>

int main(void) //main function.

{

int sum = 0; //this variable will hold summation of multiples of 3 or 5 below 1000.

for (int k = 3; k < 1000; k++) //this loop will find the summation of multiples of 3 or 5.

if (k % 3 == 0 || k % 5 == 0) //this comparison will determine if k is multiple of 3 or 5 or not.

sum = sum + k; //it will calculate summation of ks which are multiples of 3 or 5.

printf("Summation of multiples of 3 or 5 below 1000 is %d", sum); //it will print the summation on the screen.

return 0;

}