README-en.md edited online with Bitbucket

README-en.md

 ![rsz_mariposa1.png](images/rsz_mariposa1.png)
 ![rsz_mariposa.png](images/rsz_mariposa.png)
 
-[Version 2016- Tatiana]
+[Version 2016- Tatiana- Ive]
 
 A good way to organize and structure computer programs is dividing them into smaller parts using functions. Each function carries out a specific task of the problem that we are solving.
 
 
 In the introduction to the topic of functions you saw that in mathematics and in some programming languages, a function cannot return more than one result. In this laboratory experience's exercises, you will practice how to use reference variables to obtain various results from a function.
 
-### Exercise 1
+### Exercise 1: Difference between pass by value and pass by reference
 
-In this exercise you will study the difference between pass by value and pass by reference.
 
 **Instructions**
 
 1. Load the project ‘prettyPlot’ into ‘QtCreator`. There are two ways to do this:
 
-		*Using the virtual machine: Double click the file `prettyPlot.pro` located in the folder `home/eip/labs/functions-prettyplots` of your virtual machine.
-		*Downloading the project’s folder from `Bitbucket`: Use a terminal and write the command `git clone http://bitbucket.org/eip-uprrp/functions-prettyplots` to download the folder `functions-prettyplots` from `Bitbucket`. Double click the file `prettyPlot.pro` located in the folder that you downloaded to your computer.
+	* Using the virtual machine: Double click the file `prettyPlot.pro` located in the folder `home/eip/labs/functions-prettyplots` of your virtual machine.
+	* Downloading the project’s folder from `Bitbucket`: Use a terminal and write the command `git clone http://bitbucket.org/eip-uprrp/functions-prettyplots` to download the folder `functions-prettyplots` from `Bitbucket`. Double click the file `prettyPlot.pro` located in the folder that you downloaded to your computer.
 
-
-3. Configure the project and execute the program by clicking on the green arrow in the menu on the left side of the Qt Creator screen. The program should show a window similar to the one in Figure 3.
+2. Configure the project and execute the program by clicking on the green arrow in the menu on the left side of the Qt Creator screen. The program should show a window similar to the one in Figure 3.
 
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-4. Open the file `main.cpp` (in Sources). Study the `illustration` function and how to call it from the `main` function. Note that the variables `argValue` and `argRef`are initialized to 0 and that the function call for `illustration` makes a pass by value of `argValue` and a pass by reference of `argRef`. Also note that the corresponding parameters in `illustration` are assigned a value of 1.
+3. Open the file `main.cpp` (in Sources). Study the `illustration` function and how to call it from the `main` function. Note that the variables `argValue` and `argRef`are initialized to 0 and that the function call for `illustration` makes a pass by value of `argValue` and a pass by reference of `argRef`. Also note that the corresponding parameters in `illustration` are assigned a value of 1.
 
         void illustration(int paramValue, int &paramRef) {
             paramValue = 1;
                  << "The content of paramRef is: " << paramRef << endl;
         }
 
-5. Execute the program and observe what is displayed in the window `Application Output`. Notice the difference between the content of the variables `argValue` and `argRef` despite the fact that both had the same initial value, and that `paramValue` and `paramRef` were assigned the same value. Explain why the content of `argValor` does not change, while the content of `argRef` changes from 0 to 1.
+4. Execute the program and observe what is displayed in the window `Application Output`. Notice the difference between the content of the variables `argValue` and `argRef` despite the fact that both had the same initial value, and that `paramValue` and `paramRef` were assigned the same value. Explain why the content of `argValor` does not change, while the content of `argRef` changes from 0 to 1.
 
 ### Exercise 2