Sum of the positive integers less than 1000 that are divisible by 3 or 5. More...

#include <stdio.h>

Functions
int	main (void)

Detailed Description

Sum of the positive integers less than 1000 that are divisible by 3 or 5.

https://projecteuler.net/problem=1

Definition in file 0001.c.

Function Documentation

◆ main()

int main ( void )

Definition at line 8 of file 0001.c.

               {
    /*
     * `int` is only guaranteed to go up to 2^15 - 1 = 32767, which is not
     * enough. `long` is guaranteed to go up to 2^31 - 1 = 2147483647, which is
     * sufficient since it is even greater than
     * 1 + 2 + ... + 999 = 999*1000/2 = 499500.
     */
    long sum = 0;
 
    int i;
    for (i = 1; i < 1000; i++) {
        if (i % 3 == 0 || i % 5 == 0) {
            sum += i;
        }
    }
 
    printf("%ld\n", sum);
 
    return 0;
}

Functions

Detailed Description

Function Documentation

◆ main()