Expression operator - MQL4

MQL4 Expression Operator

An expression followed by a semicolon (;) constitutes an expression operator.

**Syntax:** identifier = expression;

**Description:** Assigns the result of an expression to an identifier.

**Chaining:** Can be used multiple times in an expression, evaluated left-to-right.

* Example: x = 3; y = x = 3; bool equal = (x == y);

**Syntax:** function_name(argument1, ..., argumentN);

**Description:** Invokes a function with specified arguments.

* Example: FileClose(file);

**Syntax:** ;

**Description:** Consists solely of a semicolon. Used to denote an empty body for control operators.

[Initialization of Variables](/basis/variables/initialization)

[Visibility Scope and Lifetime of Variables](/basis/variables/variable_scope)

[Creating and Deleting Objects](/basis/variables/object_live)

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