If statement only executes once - Expression problem

So I am trying to make an expression have an on and off duration, all my math is good as far as I can tell but one of the if conditions only runs once. If I duplicate the if it will work as many times as I copy it, any help is really appreciated.

t = time*24;
period=10;
holdTime=2;
loop=period+holdTime;
if(t>=loop) t=t-loop;
if(t/period>=1) 100 else 0;

The if that doesn't repeat is "if(t>=loop) t=t-loop;" The weird part is the second if will always execute.