Example: Calculate Euler’s Totient FunctionWorking with VariablesVariable ScopeMutable and Immutable VariablesDeclaring Immutable Variables: let StatementsDeclaring Mutable Variables: mutable StatementsReassigning Mutable Variables: set StatementsAssigning Tuples: Tuple DeconstructionConditional Execution: if StatementsLoopsIterate Over a Sequence: for LoopsClassical Conditional Loop: while LoopsCall an Operation or a Function: Call StatementsStop Execution: return and fail StatementsFinish Execution: return StatementsThrow an Exception: fail StatementsExample: Prepare a Quantum StateAllocate Qubits: use and borrow StatementsQuantum Conditional Loops: repeat-until LoopsConjugation: within-apply StatementsConclusion