set x 1
# This is a normal way to write a Tcl while loop.
while {$x < 5} {
puts "x is $x"
set x [expr {$x + 1}]
}
puts "exited first loop with X equal to $x\n"
# The next example shows the difference between ".." and {...}
# How many times does the following loop run? Why does it not
# print on each pass?
set x 0
while "$x < 5" {
set x [expr {$x + 1}]
if {$x > 7} break
if "$x > 3" continue
puts "x is $x"
}
puts "exited second loop with X equal to $x"