Some example runs

A simple run:

NOTE: in the sample ouput, the ouput lines with : are prompts to the user, the values after the : are input values entered by the user.
In this example, we have highlighted the user input in bold (this is not repeated in other examples). 
./prog

This program computes the average of a user specifed number of
random numbers from the range 0 to N, N specified by the user
Enter the number of random values: 400
Enter the largest value in the range: 50

The average of 400 random values in the range [0,50] is 24.095

Now I'm going to draw a pretty picture for you
enter a value betwen 3 and 20
value: 6
      *
     ***
    *****
   *******
  *********
 ***********
do you want to see another one? enter 0 for no, 1 for yes
value: 0

bye bye

An example run with repeating the drawing:

./prog

This program computes the average of a user specifed number of
random numbers from the range 0 to N, N specified by the user
Enter the number of random values: 400
Enter the largest value in the range: 50

The average of 400 random values in the range [0,50] is 25.4825

Now I'm going to draw a pretty picture for you
enter a value betwen 3 and 20
value: 4
    *
   ***
  *****
 *******
do you want to see another one? enter 0 for no, 1 for yes
value: 1
enter a value betwen 3 and 20
value: 8
        *
       ***
      *****
     *******
    *********
   ***********
  *************
 ***************
do you want to see another one? enter 0 for no, 1 for yes
value: 1
enter a value betwen 3 and 20
value: 20
                    *
                   ***
                  *****
                 *******
                *********
               ***********
              *************
             ***************
            *****************
           *******************
          *********************
         ***********************
        *************************
       ***************************
      *****************************
     *******************************
    *********************************
   ***********************************
  *************************************
 ***************************************
do you want to see another one? enter 0 for no, 1 for yes
value: 0

bye bye

An example run showing handling input that is not in range:

This program computes the average of a user specifed number of
random numbers from the range 0 to N, N specified by the user
Enter the number of random values: -4
try again, -4 isn't a positive value
Enter the number of random values: 2000
Enter the largest value in the range: -4
try again, -4 has to be larger than 0
Enter the largest value in the range: 500

The average of 2000 random values in the range [0,500] is 252.704

Now I'm going to draw a pretty picture for you
enter a value betwen 3 and 20
value: 2
Try again, 2 is not between 3 and 20
value: 22
Try again, 22 is not between 3 and 20
value: 6
      *
     ***
    *****
   *******
  *********
 ***********
do you want to see another one? enter 0 for no, 1 for yes
value: 9
Try again, 9 is not between 0 and 1
value: -3
Try again, -3 is not between 0 and 1
value: 88
Try again, 88 is not between 0 and 1
value: 1
enter a value betwen 3 and 20
value: 5
     *
    ***
   *****
  *******
 *********
do you want to see another one? enter 0 for no, 1 for yes
value: 0

bye bye