Provied a loop with a menu. Repeat until the user selects quit. Prompt the user to select one of the menu items. Test for numbers that are not in the menu, provide an error message, and then continue. The menu shall contain:
1. Square   pattern
2. Triangle pattern
3. Diaginal pattern
4. Reverse diaginal pattern
5. Quit

After the user selects a pattern, allow them to specify the size. If the size is smaller than 1 or larger than 9, give them an error message and repeat the specification of the size.

Once the user has correctly selected a pattern and a size, print the pattern using the size specified.

Pattern 1 is a square. Example for size 4:

4444
4444
4444
4444

Pattern 2 is a triangle. Example for size 5:

5
55
555
5555
55555

Pattern 3 is a square with a diaginal of numbers in stars. Example for size 6:

6*****
*6****
**6***
***6**
****6*
*****6

Pattern 4 is a square with a reversed diaginal of numbers in stars. Example for size 7:

******7
*****7*
****7**
***7***
**7****
*7*****
7******

Answer rating: 100% (QA)

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