Swift if statement

Grammar

In Swift language if syntax of the statement:

if boolean_expression {
   /* The statement to be executed if the Boolean expression is true */
}

If the Boolean expression is true , then if the block of code within the statement will be executed. If the Boolean expression is false , then if the first set of code at the end of the statement (after closing parentheses) is executed.

Flow chart

Example

import Cocoa

var varA:Int = 10;

/* detected condition */
if varA < 20 {
    /* If the conditional statement is true, execute the following program */
    print("VarA ＜ 20");
}
print("The value of the varA variable is \(varA)");

When the above code is compiled and executed, it produces the following results:

varA ＜ 20
The value of the varA variable is 10