Dev C: 5.12

void showMenu() { cout << "\n========== CALCULATOR FEATURE ==========\n"; cout << "1. Basic Calculator (+, -, *, /)\n"; cout << "2. Advanced Calculator (^, √, sin, cos, tan)\n"; cout << "3. Number Statistics (Sum, Average, Min, Max)\n"; cout << "4. Prime Number Checker\n"; cout << "5. Temperature Converter (Celsius/Fahrenheit)\n"; cout << "6. Exit\n"; cout << "========================================\n"; }

return 0; }

#include <iostream> #include <cmath> #include <iomanip> #include <vector> #include <algorithm> using namespace std; dev c 5.12

void basicCalculator() { double num1, num2; char operation; void showMenu() { cout &lt