#include <stdio.h>

#define NUMBER 5

int main() {
    unsigned int array[NUMBER], i;

    printf("Enter 5 numbers: ");
    for (i = 0; i < NUMBER; i++) {
        scanf("%u", &array[i]); 
    }

    printf("Writing them to 'data'...");
    FILE* out = fopen("data", "w");
    if (fwrite(array, sizeof(unsigned int), NUMBER, out) != NUMBER) {
        printf("Failed to write!\n");
        return 1;
    } else {
        printf("Success!\n");
    }

    return 0;
}