Common loop applications

• before the loop, initialise the variable used for termination
• update variable appropriately inside loop

A common requirement of a loop is to accumulate a sum or product.

• must initialise variable with sum or product outside loop
• update variable appropriately inside loop

Another common task is to look for special cases

• eg largest value, smallest value
• again must consider correct initial value
• then appropriate update

Another common problem is to display a table

• must display heading outside loop, suitably spaced
• then display values inside loop with correct formatting