пункт 3. Добавила text.h

text.h

@@ -0,0 +1,8 @@
+#ifndef TEXT_H_INCLUDED
+#define TEXT_H_INCLUDED
+
+#include <vector>
+
+void show_histogram_text(const std::vector<size_t>& bins, size_t screen_width = 80);
+
+#endif // TEXT_H_INCLUDED