thanks googness it works

devlab1.cbp

@@ -40,6 +40,9 @@
 		<Unit filename="histogram.h" />
 		<Unit filename="histogram_internal.h" />
 		<Unit filename="main.cpp" />
+		<Unit filename="marks.svg" />
+		<Unit filename="svg.cpp" />
+		<Unit filename="svg.h" />
 		<Unit filename="text.cpp" />
 		<Unit filename="text.h" />
 		<Extensions />

devlab1.layout

@@ -2,39 +2,44 @@
 <CodeBlocks_layout_file>
 	<FileVersion major="1" minor="0" />
 	<ActiveTarget name="Debug" />
-	<File name="histogram_internal.h" open="1" top="0" tabpos="6" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="text.h" open="0" top="0" tabpos="4" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="0" topLine="0" />
+			<Cursor1 position="69" topLine="0" />
 		</Cursor>
 	</File>
-	<File name="main.cpp" open="1" top="1" tabpos="1" split="0" active="1" splitpos="0" zoom_1="1" zoom_2="0">
+	<File name="text.cpp" open="0" top="0" tabpos="5" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="154" topLine="0" />
+			<Cursor1 position="342" topLine="0" />
 		</Cursor>
 	</File>
-	<File name="doctest.h" open="1" top="0" tabpos="0" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="histogram.h" open="1" top="0" tabpos="2" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="0" topLine="0" />
+			<Cursor1 position="145" topLine="0" />
 		</Cursor>
 	</File>
-	<File name="text.h" open="1" top="0" tabpos="4" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="histogram.cpp" open="0" top="0" tabpos="3" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="69" topLine="0" />
+			<Cursor1 position="876" topLine="13" />
 		</Cursor>
 	</File>
-	<File name="histogram.h" open="1" top="0" tabpos="2" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="svg.h" open="1" top="1" tabpos="3" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="123" topLine="0" />
+			<Cursor1 position="122" topLine="0" />
 		</Cursor>
 	</File>
-	<File name="histogram.cpp" open="1" top="0" tabpos="3" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="histogram_internal.h" open="1" top="0" tabpos="6" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="69" topLine="0" />
+			<Cursor1 position="0" topLine="0" />
 		</Cursor>
 	</File>
-	<File name="text.cpp" open="1" top="0" tabpos="5" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="svg.cpp" open="1" top="0" tabpos="4" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="342" topLine="0" />
+			<Cursor1 position="1243" topLine="30" />
+		</Cursor>
+	</File>
+	<File name="main.cpp" open="1" top="0" tabpos="1" split="0" active="1" splitpos="0" zoom_1="1" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="1079" topLine="39" />
 		</Cursor>
 	</File>
 </CodeBlocks_layout_file>

unittest.layout

@@ -2,14 +2,24 @@
 <CodeBlocks_layout_file>
 	<FileVersion major="1" minor="0" />
 	<ActiveTarget name="Debug" />
+	<File name="unittest.cpp" open="0" top="0" tabpos="1" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="305" topLine="0" />
+		</Cursor>
+	</File>
 	<File name="doctest.h" open="0" top="0" tabpos="0" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="96971" topLine="2177" />
+			<Cursor1 position="94789" topLine="2177" />
+		</Cursor>
+	</File>
+	<File name="histogram.cpp" open="1" top="0" tabpos="0" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="0" topLine="0" />
 		</Cursor>
 	</File>
-	<File name="unittest.cpp" open="1" top="1" tabpos="1" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="histogram_internal.h" open="0" top="0" tabpos="0" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="227" topLine="0" />
+			<Cursor1 position="160" topLine="0" />
 		</Cursor>
 	</File>
 </CodeBlocks_layout_file>