tcl error extra characters after close-brace while executing for

Question

``` set ns [new Simulator] #open nam file set nf [open out.nam w] $ns namtrace-all $nf #set variables of topology set lanNodes 5 set link("bandwidth") 5mb set link("delay") 2ms set link("queue") DropTail #define two routers set router0 [$ns node] set router1 [$ns node] #link two routers $ns duplex-link $router0 $router1 2mb 2ms DropTail #create and connect nodes with routers for {set i 0}{$i < $lanNodes}{incr i} { set n($i) [$ns node] set n([expr $i+5]) [$ns node] $ns duplex-link $n($i) $router0 $link("bandwidth") $link("delay") $link("queue") $ns duplex-link $n([expr $i+5]) $router1 $link("bandwidth") $link("delay") $link("queue") } proc finish { } { global ns nf close $nf ``` what is error for this code when i want to implemented this code in ns2 write this sentences " extra characters after close-brace while executing for " what is meaning and who can solve this

Accepted Answer

Please try editing (line 16)

```
for {set i 0}{$i < $lanNodes}{incr i} {
```

To :

```
for {set i 0} {$i < $lanNodes} {incr i} {
```

i.e. add a space after each `close-brace` ( } )

tcl error extra characters after close-brace while executing for

Solution

Problem