Example: Determinant of 2x2 Matrix in C++

C
C++
C#
Java
Python
PHP
// Determinant of 2x2 Matrix
#include <iostream>
using namespace std;

int main() {
    // Step 1: Declare variables to store the matrix elements
    double a, b, c, d;
    double determinant;

    // Step 2: Prompt the user to enter the elements of the 2x2 matrix
    cout << "Enter the elements of the 2x2 matrix:" << endl;
    cout << "Element (a): ";
    cin >> a;
    cout << "Element (b): ";
    cin >> b;
    cout << "Element (c): ";
    cin >> c;
    cout << "Element (d): ";
    cin >> d;

    // Step 3: Calculate the determinant using the formula (a*d - b*c)
    determinant = (a * d) - (b * c);

    // Step 4: Display the input matrix and its calculated determinant
    cout << "\nThe 2x2 matrix is:" << endl;
    cout << "[ " << a << "  " << b << " ]" << endl;
    cout << "[ " << c << "  " << d << " ]" << endl;
    cout << "\nThe determinant of the matrix is: " << determinant << endl;

    return 0;
}