The switch statement uses the same syntax as the switch statement in C. For example, you might have a statement like:
switch(month){
case 2: days = evenyear? 29: 28; break;
case 4:case 6:case9: days = 30; break;
default: days = 31; break;
}
Refer to the Switch Statement VI in the labview\examples\math\formula_node.llb for an example of using a switch statement in a Formula Node.