5)Scala programming constructs: If Else Statement and Expressions:

Scala If Else Statement and Expressions:
if else statements are used to test the conditions in the scala.

will go through one by one:

• if clause as a statement
• if and else clause as a statement
• if, else if, and else clause as a statement
• if and else clause as expression

1)if clause as a statement
Only executes if the conditions is true.

Syntax:

if(condition){ }

Example:

2)if and else clause  as a statements:
Executes if the conditions is true else the default value prints out on the console.

Syntax:

if(condition)
{}
else
{}

Example:

3)if, else if and else clause  as a statements:
Executes if the conditions is true else inside the else if ,else  the default value prints out on the console.

Syntax:

if(condition)
{}
else if
{} else{}

Example:

4)if and else clause as expression:
like ternary operator in our previous programming java.

Example:

var num_apples = if(persons>10) (persons * apples_per) else default_app