Mihail Rogachev · @Mihail_Rogachev
--- a/solution/src/main.c
+++ b/solution/src/main.c
 #include <stdio.h>
+#include <stdlib.h>

-int main( int argc, char** argv ) {
-    (void) argc; (void) argv; // supress 'unused parameters' warning
+#include "../include/bmp.h"
+#include "../include/transform.h"
+
+int main(int argc, char* argv[]) {
+
+    if (argc != 3){
--- a/solution/src/bmp.c
+++ b/solution/src/bmp.c
+       .biSize = 40,
+       .biWidth = img->width,
+       .biHeight = img->height,
+       .biPlanes = 1,
+       .biBitCount = 24,
+       .biCompression = 0,
+       .biSizeImage = (sizeof(pixel) * img->width + calculate_padding(img->width)) * img->height,
+       .biXPelsPerMeter = 0,
+       .biYPelsPerMeter = 0,
+       .biClrUsed = 0,
+       .biClrImportant = 0
+    };
+}
+
+enum read_status from_bmp(FILE* in, image* img){
+    struct bmp_header header = {0};
--- a/solution/src/main.c
+++ b/solution/src/main.c
 #include <stdio.h>
+#include <stdlib.h>

-int main( int argc, char** argv ) {
-    (void) argc; (void) argv; // supress 'unused parameters' warning
+#include "../include/bmp.h"
+#include "../include/transform.h"
+
+int main(int argc, char* argv[]) {
+
+    if (argc != 3){
+        fprintf(stderr, "Incorrect input!\n");
+        return -1;
--- a/solution/src/bmp.c
+++ b/solution/src/bmp.c
+#include <stdio.h>
+
+#include "../include/bmp.h"
+
+
+#ifndef BMP_C
+#define BMP_C
+
+uint8_t calculate_padding(uint64_t width){
+    return (4 - (sizeof(pixel) * width)) % 4;
+}
+
+struct bmp_header generate_BMPheader(image const* img){
+    return (struct bmp_header) {
+       .bfType = 0x4D42,
--- a/solution/src/main.c
+++ b/solution/src/main.c
+int main(int argc, char* argv[]) {
+
+    if (argc != 3){
+        fprintf(stderr, "Incorrect input!\n");
+        return -1;
+    }
+
+    FILE* input_file = fopen(argv[1], "rb");
+    if (!input_file){
+        fprintf(stderr, "Can't open input file!");
+        return -1;
+    }
+
+    FILE* output_file = fopen(argv[2], "wb");
+    if (!output_file){
+        fprintf(stderr, "Can't open output file!");
--- a/solution/src/bmp.c
+++ b/solution/src/bmp.c
+#include <stdio.h>
+
+#include "../include/bmp.h"
+
+
+#ifndef BMP_C
+#define BMP_C
+
+uint8_t calculate_padding(uint64_t width){
--- a/solution/src/main.c
+++ b/solution/src/main.c
 #include <stdio.h>
+#include <stdlib.h>

-int main( int argc, char** argv ) {
-    (void) argc; (void) argv; // supress 'unused parameters' warning
+#include "../include/bmp.h"
+#include "../include/transform.h"
+
+int main(int argc, char* argv[]) {
+
+    if (argc != 3){
+        fprintf(stderr, "Incorrect input!\n");
+        return -1;
+    }
+
+    FILE* input_file = fopen(argv[1], "rb");