Conditional Statements

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Time to write a simple if-else statement.

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if (<condition>) { //statements to be executed when condition is true } else { //statements to be executed when condition is false }

The else block is optional. If no action is required when the condition is false, omit the else block.


Nested-If example:

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if (<condition>) { //statement when condition is true } else { //some statements here if (<another condition>) { //statements to be executed when <another condition> is false } }

Use nested-if when you need to perform some statements outside the inner if-block but if you don't need to put something in //some statements here, you can use the else-if block.

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if (<condition1>) { //statement1 } else if (<condition2>) { //statement2 } else if (<condition3>) { //statement3 when condition is true } else { //statements to be executed when all condition fails }

Only the block under the first condition that equates to true will be executed. So yeah, I'm basically saying that the order is important. It's a good practice to arrange the conditions from the most to the least probable. Even in real life, we first verify the obvious before resorting to a new hypothesis.

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