set total_cost [format "%.2f" [expr $solid_cost + $pur_cost +
$td_cost + $proc_cost]]
got this warning:
"Expr without braces"
Where do I put the braces?
Like this:
set total_cost [format "%.2f" [expr {$solid_cost + $pur_cost +
$td_cost + $proc_cost}]]
Also read http://wiki.tcl.tk/10225 for the reason Nagelfar is
complaining about this.
Mark