getline function
  Subfolder
	“Using_getline” in the shared
	folder.
    In the file under Using_getline, called
    using_getline.c, write a program 
    with these features:
    
    			An structure called struct survey which stores
    			the name of a person( with no fixed length) and a field which stores
    			the street of the person if this person lives in Leganés, or the district
    			if the person does not live in Leganés.
    			Hint: You will need a field to know if the person lives in Leganés
    			or does not.
    		
    	  Function void data_enter(struct survey *ptr):
    	  This function asks the user to enter his or her name.
    	  Then it asks the user whether he or she is a Leganés citizen.
    	  If the answer is Yes (Y), it asks the user to enter the name of 
    	  their address. Otherwise (N), it asks the user to enter the name of
    	  the district he or she comes from.  
    	
           Function void data_display(struct survey *ptr):
           This function prints the name of the user 
           and either the address if he or she is a Leganés citizen,
           or their district.
        
    Fill the main function so that it first gets the data from the user and, second,
    prints the data on the screen, with the help of the previous two functions.    
    
When finished, upload the file to the repository with svn commit.