Exercise On Basic Operation and Syntax

// Create a method that takes two integers as input and returns their sum, difference, product, and quotient.
int Add(int a, int b) => ;// implement addition of a and b before the semicolon;
int Subtract(int a, int b) => ; // implement subtraction of b from a the semicolon;
int Multiply(int a, int b) => ; // implement the multiplication of a and b before the semicolon;
double Divide(int a, int b) => b != 0 ? (double)a / b : throw new DivideByZeroException("Cannot divide by zero.");
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// Example usage
// write the test cases
int number1 = 10;
int number2 = 5;
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// Display results
Console.WriteLine($"Addition: {Add(number1, number2)}");
Console.WriteLine($"Subtraction: {}"); // call Subtract method and display result
Console.WriteLine($"Multiplication: {}"); // call Multiply method and display result
Console.WriteLine($"Division: {}"); // call Divide method and display result

//Implement a method that prompts the user to enter two integers and then calls the arithmetic methods to display the results.
// Hint: use Int.Parse and Console.Readline to get user input

double NewtonSqrt(double f)
{
    double s = f/2;    // initial guess of the squareroot
    double m = ;       // find m given m * s = f;
    double tol = 1e-6; // Tolerance
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    // measure convergence. check if m and s are as close as measured by a tolerance
    bool isconverged = Abs(m - s) < tol; // 
    while (!isconverged)
    {
        // replace s with arithmetic mean of s and m
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        // update m
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        // check convergence
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    }
    return s;
}
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// Example usage of NewtonSqrt
double number = 20.0;
Console.WriteLine($"Square root of {number} is approximately {NewtonSqrt(number):10:4}");