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

struct matrix
{
    int** tab;
    unsigned w;
    unsigned h;
};

typedef struct matrix Matrix;

void init(Matrix* m, unsigned w, unsigned h)
{
    unsigned i;
    m->w = w;
    m->h = h;
    m->tab = (int**)malloc(w*sizeof(int*));
    for(i = 0; i < w; ++i)
        m->tab[i] = (int*)malloc(h*sizeof(int));
}

void clean(Matrix* m)
{
    unsigned i;
    for(i = 0; i < m->w; ++i)
        free(m->tab[i]);
    free(m->tab);
}

void save(Matrix* m, const char* path)
{
    unsigned i;
    FILE* f = fopen(path, "wb");
    for(i = 0; i < m->w; ++i)
        fwrite((m->tab[i]), sizeof(int), m->h, f);
    fclose(f);
}

void load(Matrix* m, const char* path)
{
    unsigned i;
    FILE* f = fopen(path, "rb");
    for(i = 0; i < m->w; ++i)
        fread((m->tab[i]), sizeof(int), m->h, f);
    fclose(f);
}

void fill(Matrix* m, int f)
{
    unsigned i, j;
    for(i = 0; i < m->w; ++i)
        for(j = 0; j < m->h; ++j)
            m->tab[i][j] = f;

}

void display(Matrix* m)
{
    unsigned i, j;
    for(i = 0; i < m->w; ++i)
    {
        for(j = 0; j < m->h; ++j)
        {
            printf("%d ", m->tab[i][j]);
        }
        printf("\n");
    }
}

int main(int argc, char** argv)
{
    Matrix src, dst;
    init(&src, 5, 5);
    init(&dst, 5, 5);
    fill(&src, 13);
    fill(&dst, 0);
    display(&src);
    display(&dst);
    printf("\n\n");
    save(&src, "pliczek.lol");
    load(&dst, "pliczek.lol");
    display(&dst);
    clean(&src);
    clean(&dst);
    return 0;
}