# Expression Operator

Any expression followed by a semicolon (;) is the operator. Here are some examples of expression operators.

## Assignment Operator

Identifier = expression;

```
  x=3;
  y=x=3; 
  bool equal=(x==y);

```

Assignment operator can be used many times in an expression. In this case, the expression is processed from right to left.

Function Calling Operator

Function_name (argument1,..., argumentN);

```
  FileClose(file);

```

## Empty Operator

Consists only of a semicolon (;) and is used to denote an empty body of a control operator.

See also

[Initialization of Variables](/en/docs/basis/variables/initialization), [Visibility Scope and Lifetime of Variables](/en/docs/basis/variables/variable_scope), [Creating and Deleting Objects](/en/docs/basis/variables/object_live)