Why does data type change if "increment​" function added?

I have a state machine with a shift register coupling data between states. In an early state I connect an I32 constant to the data path which causes the data path to take on an I32 type. In a later state I insert an increment (+1) function and the data path changes to a DOUBLE type. Why? I can insert an I32 conversion before or after the +1 function and the data path remains or is converted back to I32 type.

It is good programming practice to initialize your variables, be that in C/C++, VB, etc. Likewise, the reason I say you should always initialize your shift register is so that when your VI runs, you know that it starts at your initialized value and not something else.
There will be times when your shift register will start at a previously defined value and you get intermittent problems. It's similar to creating data dependencies in LabVIEW. It's not required but it's good programming practice to have some form of dataflow, be that for troubleshooting or debugging. And yes, there are times (not a whole lot), where you cannot create data dependencies but at times like this, you'll need to make sure you can safely say, I am very sure that this VI wi
ll run before this VI will. Likewise, by initializing a shift register, I can safely say that my loop will always start with 0.
Sorry but I get defensive at times... Gorka is right about how the data type changes. You can changet the data type by changing the representation by right clicking on the shift register.
Shan Pin Koh

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