C++ Assignment 3

Quadratic Equation Solver §

#include <iostream>
#include <cmath>
 
int main()
{
    // caleb b
    // quadratic equation solver
    double a, b, c, x1, x2, discriminant;
    std::cout << "Enter a: " << std::endl;
    std::cin >> a;
    std::cout << "Enter b: " << std::endl;
    std::cin >> b;
    std::cout << "Enter c: " << std::endl;
    std::cin >> c;
    
    discriminant = pow(b, 2) - 4 * a * c;
    // check if there are zero, one, or two solutions
    if (discriminant > 0)
    {
        x1 = (-b + sqrt(discriminant)) / (2 * a);
        x2 = (-b - sqrt(discriminant)) / (2 * a);
        std::cout << "There are two solutions: " << x1 << " and " << x2 << std::endl;
    }
    else if (discriminant == 0)
    {
        x1 = (-b + sqrt(discriminant)) / (2 * a);
        std::cout << "There is one solution: " << x1 << std::endl;
    }
    else
    {
        std::cout << "There are no real solutions." << std::endl;
    }
	return 0;
}
 

Leap Year Calculator §

#include <iostream>
#include <cmath>
 
int main()
{
    // caleb b
    // leap year calculator
 
    int year;
    std::cout << "Enter a year: " << std::endl;
    std::cin >> year;
 
    if (year % 4 == 0 && year % 400 == 0) {
        std::cout << "That is a leap year." << std::endl;
    } else if (year % 4 == 0 && year % 100 != 0) {
        std::cout << "That is a leap year." << std::endl;
    } else {
        std::cout << "That is not a leap year." << std::endl;
    }
 
	return 0;
 
}

Change Calculator §

#include <iostream>
#include <cmath>
 
int main()
{
    // caleb b
    // change calculator
    int value;
    int quarters;
    int dimes;
    int nickels;
    int pennies;
    std::cout << "Enter the amount of change in cents: " >> std::endl;
    std::cin >> value;
    if (value < 0 || value > 100) {
        std::cout << "Invalid input" << std::endl;
        return 0;
    }
    
    quarters = value / 25;
    value = value % 25;
    dimes = value / 10;
    value = value % 10;
    nickels = value / 5;
    value = value % 5;
    pennies = value;
 
    std::cout << "Quarters: " << quarters << std::endl;
    std::cout << "Dimes: " << dimes << std::endl;
    std::cout << "Nickels: " << nickels << std::endl;
    std::cout << "Pennies: " << pennies << std::endl;
    return 0;
}