1.

The Math Program (this is the title you want your void function to display)

1. Add

2. Multiply

3. Exit

Here is my code :

using namespace std; // Function declarations double addition(double num1, double num2); double multiplication(double num1, double num2);

int main() { // Declaring variables int choice; double sum, multiply, product; double num1, num2;

// This loop continues to run until the user enters choice 3 while (true) { // Displaying the menu cout << " Menu" << endl; cout << "----" << endl; cout << "1. Add" << endl; cout << "2. Multiply" << endl; cout << "3. Exit" << endl; cout << "Enter choice :"; cin >> choice;

switch (choice) { case 1: {

cout << "Enter first number :"; cin >> num1; cout << "Enter second number :"; cin >> num2;

sum = addition(num1, num2);

// Displaying the sum of two numbers cout << "The sum of " << num1 << " and " << num2 << " is " << sum << endl; continue; } case 2: { // Getting the inputs numbers entered by the user cout << "Enter first number :"; cin >> num1; cout << "Enter second number :"; cin >> num2; product = multiplication(num1, num2);

// Displaying the product of two numbers cout << "The Product of " << num1 << " and " << num2 << " is " << product << endl; continue; } case 3: { cout << ":: Program Exit ::" << endl; break; } default: { cout << "Invalid input.Must be either 1 or 2 or 3" << endl;

continue; } } break; }

return 0; }

// Function implementation which add two numbers double addition(double num1, double num2) { return num1 + num2; } // Function implementation which multiplies two numbers double multiplication(double num1, double num2) { return num1 * num2; }