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solution/include/bmp_working.h

+#ifndef SOLUTION_BMP_WORKING_H
+#define SOLUTION_BMP_WORKING_H
+
+#include "bmp_header.h"
+
+enum open_status {
+    READ_OK = 0,
+    READ_INVALID_SIGNATURE,
+    READ_NO_FILE,
+    READ_ERROR
+};
+
+enum close_status {
+    WRITE_OK = 0,
+    WRITE_ERROR
+};
+
+enum open_status read_bmp(char *input, struct image *image);
+enum close_status save_bmp(char *output, struct image const *image);
+
+#endif