Tcl - Break Statement


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The break statement in Tcl language is used for terminating a loop. 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.

If you are using nested loops (i.e., one loop inside another loop), the break statement will stop the execution of the innermost loop and start executing the next line of code after the block.

Syntax

The syntax for a break statement in Tcl is as follows −

break;

Flow Diagram

Break Statement

Example

#!/usr/bin/tclsh

set a 10

# while loop execution 
while {$a < 20 } {
   puts "value of a: $a"
   incr a
   if { $a > 15} {
      # terminate the loop using break statement 
      break
   }
}

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

value of a: 10
value of a: 11
value of a: 12
value of a: 13
value of a: 14
value of a: 15
tcl_loops.htm
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