Final answer:
In an if-else statement, the code after the else clause executes when the if clause's condition is not met. The else provides an alternative set of instructions.
Step-by-step explanation:
When you write an if-else statement, the statements that appear after the else clause execute under the circumstances when the condition specified in the if clause is not met. An if-else statement is a conditional construct where the if part includes a condition which, if true, will execute the block of code following it. If this condition is false, the block of code following the else clause is executed instead.
Conditionals are logical statements that express necessary and sufficient conditions and are usually formulated as if-then statements. The if part, known as the antecedent, sets the condition, whereas the then part, known as the consequent, is the outcome that follows if the antecedent is true. In practice, if the antecedent is false, the code under the else clause will run, providing an alternative set of instructions.