// Read integers until a negative integer is read 
// and then print odd and even integers on separate lines
// Assume a max of 1000 integers will be read before the first negative input
// e.g
// $ ./array_odd_even 
// 1 
// 2 
// 3 
// 2
// -42 
// Odd numbers were: 1 3 
// Even numbers were: 2 2 


#include <stdio.h>

#define MAX_NUMBERS 1000

int main(void) {

    int odd[MAX_NUMBERS];
    int even[MAX_NUMBERS];
    int odd_count = 0;
    int even_count = 0;

    // data entry loop
    // what am i reading in? (integers/lines?)
    // do i need to check for EOF? no
    int number;
    scanf("%d", &number);
    while (number >= 0) {
        if (number % 2 == 0) {
            // even: add to even array
            even[even_count] = number;
            even_count++;
        } else {
            odd[odd_count] = number;
            odd_count++;
        }
        scanf("%d", &number);
    }

    printf("Odd numbers were:");
    int i = 0;
    while (i < odd_count) {
        printf(" %d", odd[i]);
        i++;
    }
    printf("\n");

    printf("Even numbers were:");
    i = 0;
    while (i < even_count) {
        printf(" %d", even[i]);
        i++;
    }
    printf("\n");

    return 0;
}