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An else-statement is an addition you can place on an if-statement to branch your decision: that is, to execute one set of code if your conditional value is true, and another if the value is false. An else-statement is constructed using the following syntax:
if (conditionalValue) { ExecuteThisCode(); } else { ExecuteSomeOtherCode(); } |
The code in the if-statement is executed if the conditional value is true. The code contained within the else-statement is executed if the conditional value is false.
For example, you may wish to execute different one set of code if a target is at least 21, and another if they are less than 21. You could create two different if-statements, as shown in the following example:
if (age >= 21) { ExecuteCodeForAdultCustomers();
if (age < 21) { ExecuteCodeForJuvenileCustomers(); |
Alternately, you could use an else-statement, instead.
if (age >= 21) { ExecuteCodeForAdultCustomers(); else { ExecuteCodeForJuvenileCustomers(); |