#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
void *get_data(char *filename, size_t block_size, size_t length){

    FILE *file = fopen(filename, "r");
    if(!file) return NULL;

    char *length_block = malloc((length * block_size) * sizeof(char));
    if( length_block == NULL){
        fclose(file);
        return NULL;
    }
    int index = 0;
    while(length != 0){
        int tmp_block = block_size;
        while (tmp_block != 0) {
            *(length_block + index) = fgetc(file);
            index ++;
            tmp_block --;
        }
        length --;
    }


    fclose(file);
    return length_block;
}
/*
int main()
{
    void *a = get_data("example.txt", 1, 7);
    printf("%.7s\n", (char *)a); // Prints: Example
    free(a);

    return 0;
}*/