Lot_Volume - bibliothèque pour MetaTrader 4

The functuion automatically calculates the lot size from the specified percent of free assets (х%) or uses the fixed lot size ("х" without "%" sign).

We add the function #include <Lot_Volume.mqh> to the program and call it in the necessary place: OrderSend(Symbol, Order Type, Lot_Volume(), Price, 0, Stop, Profit);

If you specify "10%", for example, then the size of the lot will be equal to 10% of free assets, and if you specify just "10" then the size will be equal to 10 lots.

Certainly, the library is not perfect, I wait for your comments.