Wednesday, July 24, 2024
Tuesday, July 23, 2024
Addition and Subtraction Using Polymorphism in Java
Program Listing
import java.util.Scanner;
class MathOperation {
public int performOperation(int a, int b) {
return 0; // Base class default implementation
}
}
class Addition extends MathOperation {
@Override
public int performOperation(int a, int b) {
return a + b;
}
}
class Subtraction extends MathOperation {
@Override
public int performOperation(int a, int b) {
return a - b;
}
}
public class Main {
public static void main(String[] args) {
MathOperation operation = null;
int num1, num2;
char op;
Scanner scanner = new Scanner(System.in);
System.out.println("\n\n\tAddition and Subtraction Using Polymorphism in Java\n");
System.out.print("\tEnter two numbers: ");
num1 = scanner.nextInt();
num2 = scanner.nextInt();
System.out.print("\tEnter the operation (+ for addition, - for subtraction): ");
op = scanner.next().charAt(0);
if (op == '+') {
operation = new Addition();
} else if (op == '-') {
operation = new Subtraction();
} else {
System.out.println("\tInvalid operation.");
return;
}
int result = operation.performOperation(num1, num2);
System.out.println("\n\tThe Result: " + result);
scanner.close();
System.out.println("\n\tEnd of Program. Thank you for using this program.");
}
}
Monday, July 22, 2024
Friday, July 19, 2024
Thursday, July 18, 2024
Wednesday, July 17, 2024
Tuesday, July 16, 2024
Monday, July 15, 2024
Simple Calculator Using Abstraction in C++
Program Listing
#include <iostream>
// Abstract class for calculator operations
class Operation {
public:
virtual double calculate(double a, double b) = 0;
};
// Concrete subclasses for each operation
class Addition : public Operation {
public:
double calculate(double a, double b) override {
return a + b;
}
};
class Subtraction : public Operation {
public:
double calculate(double a, double b) override {
return a - b;
}
};
class Multiplication : public Operation {
public:
double calculate(double a, double b) override {
return a * b;
}
};
class Division : public Operation {
public:
double calculate(double a, double b) override {
if (b == 0) {
std::cerr << "Error: Division by zero is not allowed." << std::endl;
return 0; // Return 0 as an error value
}
return a / b;
}
};
int main() {
double num1, num2;
char operation;
std::cout <<"\n\n\tSimple Calculator Using Abstraction in C++\n";
std::cout << "\n\tGive two numbers: ";
std::cin >> num1 >> num2;
std::cout << "\tEnter the operation (+, -, *, /): ";
std::cin >> operation;
Operation* op = nullptr;
switch (operation) {
case '+':
op = new Addition();
break;
case '-':
op = new Subtraction();
break;
case '*':
op = new Multiplication();
break;
case '/':
op = new Division();
break;
default:
std::cerr << "\tError: Invalid operation." << std::endl;
return 1;
}
double result = op->calculate(num1, num2);
std::cout << "\n\tThe Result: " << result << std::endl;
std::cout << "\n\n\tEnd of Program. Thank you for using this program." << std::endl;
delete op;
return 0;
}