if

#if statement ##if

if (condition-expression)
	statement

or

if (condition-expression)
{
	statements
}

##else

if (condition-expression)
	true-statement
else
	false-statement

##multi condition

if (A condition)
	evaluate statement when A is true
else if (B condition)
	evaluate statement when B is true
else
	false-statement

but, it is same that

if (A condition)
{
	evaluate statement when A is true
}
else
{
	if (B condition)
		evaluate statement when B is true
	else
		false-statement
}