The if statement ( If...Then in VB ) executes embedded statements if a condition evaluates to true.

if ( condition ) {
   ... statements ...
} else {
   ... statements ...
}

if condition then
   ... statements ...
else 
   ... statements ...
end if

if ( condition ) {
   ... statements ...
} else {
   ... statements ...
}

• The condition can be any valid expression that evaluates to true or false.
• The if statement can optionally include an else clause.
• Any valid statement can follow the if or else statement, including further if statements.

NOTE: In C# and JScript, if more than one statement follows a control statement, such as an if or else statement, the statements must be enclosed within braces { }.

An if statement is executed as follows:

• The condition is evaluated.
• If the condition is true, the statements within the if block are executed.
• If the condition is false, and an else part is present, the statements within the else block are executed.
• Thereafter, control is passed to the statement after the if...else block.

The following example demonstrates use of an if...else statement to display a greeting depending on the time of day.

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