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

int main() {
    srand(time(NULL));

    FILE *fn_a = fopen("netext_a.bin", "wb");
    if (fn_a == NULL) {
        perror("Error opening file netext_a.bin");
        return 1;
    }
    for (int i = 1; i <= 100; i++) {
        char n = -50 + rand() % 151;
        fwrite(&n, sizeof(char), 1, fn_a);
    }
    fclose(fn_a);

    FILE *fn_b = fopen("netext_b.bin", "wb");
    if (fn_b == NULL) {
        perror("Error opening file netext_b.bin");
        return 1;
    }
    for (int i = 1; i <= 100; i++) {
        char n = -50 + rand() % 151;
        fwrite(&n, sizeof(char), 1, fn_b);
    }
    fclose(fn_b);

    FILE *fn_v = fopen("netext_v.bin", "wb");
    if (fn_v == NULL) {
        perror("Error opening file netext_v.bin");
        return 1;
    }
    for (int i = 1; i <= 100; i++) {
        char n = -50 + rand() % 151;
        fwrite(&n, sizeof(char), 1, fn_v);
    }
    fclose(fn_v);

    return 0;
}