What is the if-else statement?

What is the if-else statement?

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The if-else statement is a conditional statement. It is used to execute a statement or group of statements based on some condition.

The general format of the statement is given below:

if(boolean_expression)
   {statements;}
else
   {statements;}

The else clause is optional.

The following points must be noted about the if statement:

• The argument to the if statement must be a boolean expression.
  • If the argument evaluates to true, then the statements in the if-block are executed.
  
  
  • If the argument evaluates to false, then the statements in the else-block are executed.
• If the number of statements after the if clause is more than one, it is necessary to put them inside the curly braces. However, in case of a single statement, the curly braces are optional.

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