main.c

#include <stdio.h>
#include <string.h>
#include "lib.c"

int main(int argc, char *argv[]) {
    if (argc != 2) {
        puts("Enter one filename.");
        return 1;
    }

    FILE *image = fopen(argv[1], "rb");
    if (image == NULL) {
        puts("Could not open file.");
        return 1;
    }

    int height = get_height(image);
    int width = get_width(image);

    int line_len = (width + 1) * 20;
    char buffer[line_len];
    memset(buffer, 0, sizeof(buffer));

    char pixels[height][line_len];
    memset(pixels, 0, sizeof(pixels));

    int padding = get_padding(width);
    fseek(image, 54, SEEK_SET);
    for (int i = height - 1; i >= 0; i--) {
        write_line(width, buffer, line_len, image);
        strcpy(pixels[i], buffer);
        fseek(image, padding, SEEK_CUR);
    }

    for (int i = 0; i < height; i++) {
        puts(pixels[i]);
    }

}