Chapter 3: While loops

Triangle of stars

face Josiah Wang

Now, let us do some practical exercises to make sure that you really understand while loops.

Write a program that reads in an integer rows from the user.

Then, use a while loop to automatically print out a triangle of stars of height rows.

For example, the following output is expected for rows = 5.

Enter an integer: 5
*
**
***
****
*****

And here is the expected output for rows = 8.

Enter an integer: 8
*
**
***
****
*****
******
*******
********

Remember - think carefully about the algorithm first before jumping into coding!