If Statement

IF(<boolean expression>)
{
    <block of statements>
}

PROCEDURE main()
{
    DISPLAY("Enter a number: ")
    x <- NUMBER(INPUT())
    IF(x = 42)
    {
        DISPLAY("You found the secret!\n")
    }
    DISPLAY("Thanks for playing!\n")
}

main()

Flowchart

x <- NUMBER(INPUT())
IF(x > 0)
{
    DISPLAY(x)
}
DISPLAY("Goodbye")