These occur when the program is running, specifically when there is a problem with the logic. This might be using the < symbol instead of the > symbol, or using AND instead of OR. Logical errors ...

Logic errors are notoriously difficult to debug. For example, if a programmer wanted to get the average of three numbers and produced the following code: num1 = 7 num2 = 8 avg = (num1 + num2)/3 ...