Saturday, 4 August 2018

Decision Making in R Language

Decision Making

Decision Making structure, evaluate a condition and depending on the result some other code is processed.

There are three types of decision making statements in R
  • If Statement
  • If-Else Statement
  • Switch Statement

If Statement

An if statement consists of a Boolean expression followed by one or more statement.

Syntax of is Statement :-

if(Boolean expression)
{
   // Code to be executed
}






If-Else Statements

An if statement can be followed by an optional else statement, which executes when the Boolean expression is false.

The syntax of if else is :

if (Boolean_expression)
{
   // Code to be executed

else
{
    // Code to be executed
}
Example :-

   
Switch Statement

A switch statement allows a variable to be tested for equality against a list of values.

R has following Switch Statement :

    switch (expression, case1, case2..)
→ We can have any number of cases in switch.
→ No Default is available in switch.

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