better gcc and types.h

src/args.h

@@ -1,21 +1,10 @@
+#include "types.h"
 #include <stdio.h>
 #include <string.h>
 
 #ifndef ARGS_H
 #define ARGS_H
 
-struct Parameters {
-  unsigned long width;
-  unsigned long height;
-  char *file_path;
-  unsigned int size;
-  float slope;
-  float start[3];
-  float var[3];
-};
-
-typedef struct Parameters parameters;
-
 parameters parse_args(int argc, char **argv);
 
 #endif

src/bmp.h

@@ -1,8 +1,8 @@
+#include "types.h"
+
 #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 generate_line);

src/types.h

@@ -0,0 +1,18 @@
+#ifndef TYPES_H
+#define TYPES_H
+
+struct Parameters {
+  unsigned long width;
+  unsigned long height;
+  char *file_path;
+  unsigned int size;
+  float slope;
+  float start[3];
+  float var[3];
+};
+
+typedef struct Parameters parameters;
+
+typedef void line_fn(unsigned long y, char *data_buffer);
+
+#endif