#include <stdio.h>
#include <stdlib.h>

static int is_even(int n) {
  return n % 2 == 0;
}

int main(void) {
  int sum = 0;
  for (int i = 0; i < 100; i++) {
    if (is_even(i)) sum += i;
  }
  printf("sum of even numbers < 100: %d\n", sum);
  return 0;
}


#include <stdio.h>
#include <stdlib.h>

static int is_even(int n) {
  return n % 2 == 0;
}

int main(void) {
  int sum = 0;
  for (int i = 0; i < 100; i++) {
    if (is_even(i)) sum += i;
  }
  printf("sum of even numbers < 100: %d\n", sum);
  return 0;
}


#include <stdio.h>
#include <stdlib.h>

static int is_even(int n) {
  return n % 2 == 0;
}

int main(void) {
  int sum = 0;
  for (int i = 0; i < 100; i++) {
    if (is_even(i)) sum += i;
  }
  printf("sum of even numbers < 100: %d\n", sum);
  return 0;
}


#include <stdio.h>
#include <stdlib.h>

static int is_even(int n) {
  return n % 2 == 0;
}

int main(void) {
  int sum = 0;
  for (int i = 0; i < 100; i++) {
    if (is_even(i)) sum += i;
  }
  printf("sum of even numbers < 100: %d\n", sum);
  return 0;
}


#include <stdio.h>
#include <stdlib.h>

static int is_even(int n) {
  return n % 2 == 0;
}

int main(void) {
  int sum = 0;
  for (int i = 0; i < 100; i++) {
    if (is_even(i)) sum += i;
  }
  printf("sum of even numbers < 100: %d\n", sum);
  return 0;
}


#include <stdio.h>
#include <stdlib.h>

static int is_even(int n) {
  return n % 2 == 0;
}

int main(void) {
  int sum = 0;
  for (int i = 0; i < 100; i++) {
    if (is_even(i)) sum += i;
  }
  printf("sum of even numbers < 100: %d\n", sum);
  return 0;
}