diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..3da3081
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+*.c      text eol=lf diff=cpp whitespace=trailing-space,space-before-tab,tab-in-indent
+*.h      text eol=lf diff=cpp whitespace=trailing-space,space-before-tab,tab-in-indent
\ No newline at end of file
diff --git a/src/args.c b/src/args.c
index e69de29..29bae42 100644
--- a/src/args.c
+++ b/src/args.c
@@ -0,0 +1,9 @@
+#include "args.h"
+
+parameters parse_args(int argc, char **argv) {
+  parameters params;
+
+  // TODO
+
+  return params;
+}
\ No newline at end of file
diff --git a/src/args.h b/src/args.h
index e69de29..b91c4bd 100644
--- a/src/args.h
+++ b/src/args.h
@@ -0,0 +1,17 @@
+#ifndef ARGS_H
+#define ARGS_H
+
+struct Parameters {
+  unsigned long width;
+  unsigned long height;
+  char *file_path;
+  unsigned char start[3];
+  unsigned char slope[2];
+  unsigned char var[3];
+};
+
+typedef struct Parameters parameters;
+
+parameters parse_args(int argc, char **argv);
+
+#endif
\ No newline at end of file
diff --git a/src/bmp.c b/src/bmp.c
index 40e49a9..e64f4a1 100644
--- a/src/bmp.c
+++ b/src/bmp.c
@@ -1,3 +1,4 @@
+#include "bmp.h"
 #include <stdio.h>
 #include <stdlib.h>
 
@@ -70,7 +71,7 @@ char *bmp_data_line(unsigned long width, unsigned int color_depth, char *data) {
 
 void bmp_generate(unsigned long width, unsigned long height,
                   unsigned int color_depth, char *file_path,
-                  void generate_line(unsigned long y, char *data_buffer)) {
+                  line_fn generate_line) {
   FILE *fptr;
   fptr = fopen(file_path, "w");
   char *header = bmp_header(width, height, color_depth);
diff --git a/src/bmp.h b/src/bmp.h
index 08d66c7..034d813 100644
--- a/src/bmp.h
+++ b/src/bmp.h
@@ -1,4 +1,10 @@
+#ifndef BMP_H
+#define BMP_H
+
 typedef void line_fn(unsigned long y, char *data_buffer);
 
 void bmp_generate(unsigned long width, unsigned long height,
-                  unsigned int color_depth, char *file_path, line_fn);
\ No newline at end of file
+                  unsigned int color_depth, char *file_path,
+                  line_fn generate_line);
+
+#endif
\ No newline at end of file
diff --git a/src/generator.c b/src/generator.c
index 8e42236..dfe21c0 100644
--- a/src/generator.c
+++ b/src/generator.c
@@ -1,3 +1,4 @@
+#include "args.h"
 #include "bmp.h"
 #include <string.h>
 
@@ -9,6 +10,7 @@ void generate_line(unsigned long y, char *data_buffer) {
   memset(data_buffer, y, WIDTH * COLOR_DEPTH);
 }
 
-void generate() {
+void generate(parameters params) {
+  // TODO
   bmp_generate(WIDTH, HEIGHT, COLOR_DEPTH, "test.bmp", generate_line);
 }
\ No newline at end of file
diff --git a/src/generator.h b/src/generator.h
index f8ca05d..63cbc56 100644
--- a/src/generator.h
+++ b/src/generator.h
@@ -1 +1,8 @@
-void generate();
\ No newline at end of file
+#include "args.h"
+
+#ifndef GENERATOR_H
+#define GENERATOR_H
+
+void generate(parameters params);
+
+#endif
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index c0c82e7..f35de5c 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,6 +1,9 @@
+#include "args.h"
 #include "generator.h"
 
 int main(int argc, char **argv) {
-  generate();
+  parameters params;
+  params = parse_args(argc, argv);
+  generate(params);
   return 0;
 }
\ No newline at end of file
diff --git a/src/main.h b/src/main.h
index e69de29..b0790ce 100644
--- a/src/main.h
+++ b/src/main.h
@@ -0,0 +1,4 @@
+#ifndef MAIN_H
+#define MAIN_H
+
+#endif
\ No newline at end of file
diff --git a/src/rand.h b/src/rand.h
index e69de29..ce1b2fa 100644
--- a/src/rand.h
+++ b/src/rand.h
@@ -0,0 +1,4 @@
+#ifndef RAND_H
+#define RAND_H
+
+#endif
\ No newline at end of file