If-else-If Statement

An if statement can be followed by an optional else if...else statement, which is very usefull to test various conditions using single if-else-if statement.

When using if , else if , else statements there are few points to keep in mind.

An if can have zero or one else's and it must come after any else if's.

An if can have zero to many else if's and they must come before the else.

Once an else if succeeds, none of he remaining else if's or else's will be tested.

 Syntax:

Syntax of an if-else-if-else statement in C++ is:

if(boolean_expression 1)
{
   // Executes when the boolean expression 1 is true
}
else if( boolean_expression 2)
{
   // Executes when the boolean expression 2 is true
}
else if( boolean_expression 3)
{
   // Executes when the boolean expression 3 is true
}
else 
{
   // executes when the none of the above condition is true.
}