5.8 Nested Loops

• A nested loop is a loop that appears as part of the body of another loop
• The nested loops are commonly referred to as the outer loop and inner loop.
• Nested loops have various uses. One use is to generate all combinations of some items.
  • Ex: The following program generates all two letter .com Internet domain names.
    • Recall that ord() converts a 1-character string into an integer, and chr() converts an integer into a character.
      • Thus, chr(ord('a') + 1) results in 'b'

• nested loop example that graphically depicts an integer's magnitude by using asterisks, creating what is commonly called a histogram::