1. Develop a menu-driven program that inputs two numbers and, at the user's option, finds their sum, difference, product, or quotient

Develop a menu- driven program that inputs two numbers and, at the user’s option, finds their sum, difference, product, or quotient.

#include <iostream.h>

#include <conio.h>

void main()
{
clrscr();
int x = 10;
int y = 2;
int sum, difference, product, quotient;
sum = x + y;
difference = x - y;
product = x * y;
quotient = x / y;
cout << "The sum of " << x << " & " << y << " is " << sum << "." << endl;
cout << "The difference of " << x << " & " << "y << is " << difference << "." << endl;
cout << "The product of " << x << " & " << y << " is " << product << "." << endl;
cout << "The quotient of " << x << " & " << y << " is " << quotient << "." << endl;
getch();
}

To create a menu-driven program that allows the user to input two numbers and perform various operations on them (such as finding their sum, difference, product, or quotient), you can follow these steps:

Step 1: Ask the user to input two numbers.
Step 2: Display a menu with different options.
Step 3: Based on the selected option, perform the corresponding operation.
Step 4: Display the result to the user.
Step 5: Repeat the above steps until the user chooses to exit the program.

Here's an example Python code that implements this program:

```python
def add_numbers(num1, num2):
return num1 + num2

def subtract_numbers(num1, num2):
return num1 - num2

def multiply_numbers(num1, num2):
return num1 * num2

def divide_numbers(num1, num2):
return num1 / num2

# Main program
while True:
num1 = float(input("Enter the first number: "))
num2 = float(input("Enter the second number: "))

print("Select an operation:")
print("1. Add")
print("2. Subtract")
print("3. Multiply")
print("4. Divide")
print("5. Exit")

choice = int(input("Enter your choice (1-5): "))

if choice == 1:
result = add_numbers(num1, num2)
print("The sum is:", result)
elif choice == 2:
result = subtract_numbers(num1, num2)
print("The difference is:", result)
elif choice == 3:
result = multiply_numbers(num1, num2)
print("The product is:", result)
elif choice == 4:
result = divide_numbers(num1, num2)
print("The quotient is:", result)
elif choice == 5:
print("Exiting the program...")
break
else:
print("Invalid choice. Please select a number from 1 to 5.")

print() # Empty line for readability
```

In this example, the program asks the user to input two numbers. Then, it displays a menu with options to add, subtract, multiply, divide the numbers, or exit the program. The program performs the selected operation and displays the result. It will repeat this process until the user chooses to exit.

To develop a menu-driven program that performs mathematical operations on two numbers, you can follow these steps:

1. Display a menu with options for the user to choose from.
2. Take inputs from the user for two numbers.
3. Based on the user's choice, perform the selected mathematical operation on the numbers.
4. Display the result to the user.

Here's an example of how you can implement this program in Python:

```python
def add(a, b):
return a + b

def subtract(a, b):
return a - b

def multiply(a, b):
return a * b

def divide(a, b):
return a / b

print("Menu:")
print("1. Add")
print("2. Subtract")
print("3. Multiply")
print("4. Divide")

choice = int(input("Enter your choice (1-4): "))

num1 = float(input("Enter the first number: "))
num2 = float(input("Enter the second number: "))

if choice == 1:
result = add(num1, num2)
elif choice == 2:
result = subtract(num1, num2)
elif choice == 3:
result = multiply(num1, num2)
elif choice == 4:
result = divide(num1, num2)
else:
print("Invalid choice!")

print("Result:", result)
```

In this program, we define four functions for each mathematical operation: `add()`, `subtract()`, `multiply()`, and `divide()`. The user's choice determines which function is called. The program takes two numbers as input and performs the selected operation on them. Finally, it displays the result to the user.

You can run this Python program and select an option from the menu to perform the desired mathematical operation on two numbers.