experiments_cdio

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

typedef struct experiment
{
    int amount;
    double *results;
}experiment_t;

experiment_t *journal_create(experiment_t* journal, int max_size)
{
    journal = malloc(sizeof(experiment_t) * max_size);
    if (!journal)
        return NULL;

    for (int i = 0; i < max_size; i++)
        (journal + i) -> results = NULL;

    return journal;
}

void j_delete(experiment_t* journal, int size)
{
    for (int i = 0; i < size; i++)
    {
        free((journal + i) -> results);
        (journal + i) -> results = NULL;
    }
    free(journal);

    return;
}

experiment_t *journal_input(experiment_t* journal, int *size, int max_size)
{
    int amount;
    if ((scanf("%i", &amount) != 1) || amount == 0)
    {
        j_delete(journal, *size);
        return NULL;
    }

    (journal + *size) -> amount = amount;
    (journal + *size) -> results = malloc(sizeof(double) * amount);
    if (!((journal + *size) -> results))
    {
        j_delete(journal, *size);
        return NULL;
    }

    for (int i = 0; i < amount; i++)
    {
        if (scanf("%lf", (((journal + *size) -> results) + i)) != 1)
        {
            j_delete(journal, *size);
            return NULL;
        }
    }

    (*size)++;

    return journal;
}

void journal_output(experiment_t *journal, int size)
{
    for(int i = 0; i < size; i++)
    {
        printf("res of experiment %d is", i);
        for(int j = 0; j < (journal + i) -> amount; j++)
            printf("%lf", *(((journal + i) -> results) + j));
        printf("\n");
    }
}