Tcl and OTcl Tutorial for NS2 Program to find Factorial Fractorial Computation: tcl script to obtain the value of 10! = 10 * 9 * ... * 1. get factorial.tcl and run the script; write a function to compute 2^x, test your answer. Execute the script as: $ tclsh lab1a.tcl or $ ns lab1a.tcl ################################################################################ #filename : factorial.tcl # define function to compute Factorial X! proc Factorial {x} { # define variable set result 1 # for loop for {set i 1} {$i <= $x} {incr i} { set result [expr $result * $i] } # return computation result return $result } ############################################################################# # define function to compute 2^x proc 2pow {x} { # define variable set result 1 # for loop ...