README-en.md edited online with Bitbucket

README-en.md

@@ -142,7 +142,7 @@ To plot a curve that is described by parametric equations, we compute the $$x$$
 
 3. The file `main.cpp` (in Sources) contains the function `main()` where you will be adding code. Open this file and study the code.
     
-```cpp   
+    ```   
 
     QApplication a(argc, argv);
     XYPlotWindow wLine;
@@ -166,7 +166,7 @@ To plot a curve that is described by parametric equations, we compute the $$x$$
         // After all the points have been added, plot and show the graph
         wLine.Plot();
         wLine.show();
-```
+    ```
     
     The line  `XYPlotWindow wLine;` creates the object `wLine`, that is the window that will show the plot of a graph, in this case the graph of a segment. Look at the `for` loop. In this cycle several values for $$t$$ are generated and a value for $$x$$ and $$y$$ is computed for each $$t$$. Each ordered pair $$(x,y)$$ is added to the graph of the segment by the method `AddPointToGraph(x,y)`.  After the cycle, there is a call to the  method  `Plot()`, to "draw" the points on the graph, and to the method `show()`, to show the plot. The *methods* are functions that allow us to work with the data of an object. Note that each of the methods is written after `wLine`, and followed by a period. In a future laboratory experience you will learn more about objects and practice how to create them and invoke their methods.