Tertiary Operators

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General ProgrammingProgramming Tips Tricks → Tertiary Operators

A ternary operation will look something like this:

value = (boolean statement) ? (value if statement is true) : (value if statement is false);

So in a real world example:

motor[port2] = abs(vexRT[Ch2]) > 10 ? vexRT[Ch2] : 0;

In contrast to this, the if else statement would look like this:

if(abs(vexRT[Ch2]) > 10)){
  motor[port2] = vexRT[Ch2];
  motor[port2] = 0;

You can also nest ternary statements. For example, if you wanted to say: move the motor forward at the value of the joystick if it is positive and above the threshold value, but move the motor backward at 1/2 joystick value of it is negative and below the threshold value, then you can nest the ternary statements to make a if else if else statement.

motor[port2] = vexRT[Ch2] > 10 ? vexRT[Ch2] : vexRT[Ch2 < -10 ? (vexRT[Ch2] / 2) : 0;

This tip was posted by magicode over at http://www.vexforum.com/showpost.php?p=220747&postcount=2.