Control Structures

Control structures:

• C-like appearance.
• Just commands that take Tcl scripts as arguments.

Example:

Raise base to the power of p, put result in r:

    set r 1
    while {$p > 0} {
        set r $r*$base 
        set p [expr $p-1]
    }

Commands:

    if        for       switch    break
    foreach   while     eval      continue