R - break statement

The break statement in R programming language has the following two usages −

• When the break statement is encountered inside a loop, the loop is immediately terminated and program control resumes at the next statement following the loop.

• It can be used to terminate a case in the switch statement (covered in the next chapter).

Syntax

The basic syntax for creating a break statement in R is −

break

Flow Diagram

Example - Using break statement in repeat loop

v <- c("Hello","loop")
cnt <- 2

repeat {
   print(v)
   cnt <- cnt + 1
	
   if(cnt > 5) {
      break
   }
}

When the above code is compiled and executed, it produces the following result −

[1] "Hello" "loop" 
[1] "Hello" "loop" 
[1] "Hello" "loop" 
[1] "Hello" "loop" 

Example - Using break statement in while loop

x <- 10
while(x < 20) {
   if(x == 15){
      break		 
   }	     
   cat("value of x : " , x ,"\n")
   x <- x + 1        
}

When the above code is compiled and executed, it produces the following result −

value of x :  11 
value of x :  12 
value of x :  13 
value of x :  14 

Example - Using break statement in for loop

v <- LETTERS[1:10]
for ( i in v) {
   if(i == "C"){
      break
   }
   print(i)
}

When the above code is compiled and executed, it produces the following result −

[1] "A"
[1] "B"