Boolean variables used as markers or switches within code. Flags typically indicate that a certain condition has been met or to enable/disable features. The GeeksforGeeks tutorial explains: “Flag variable is used as a signal in programming to let the program know that a certain condition has met. It usually acts as a boolean variable indicating a condition to be either true or false”.

• Definition: A bool variable (true/false) that signals state changes or event occurrences. Commonly named like isTradeOpen, filterActive, entryAllowed.

• Context: In trading code, a flag may prevent repeated entries or track a mode. For example:

  bool tradePlaced = false;
if (!tradePlaced && BuySignal)
{
OrderSend(...);
tradePlaced = true;
}


  Here, tradePlaced is a flag ensuring only one trade is entered until reset.

• Example:

  // cAlgo: Only trade after initial conditions met
bool ready = false;
if (!ready && Bars.Count > 200)
ready = true;
if (ready && ...entry conditions...)
ExecuteMarketOrder(TradeType.Buy, SymbolName, 10000);

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