Question

How to find determinant of 2x2 matrix in C++

Answer 1

#include <iostream>

int main()
{
    int arr[2][2] = { {7, 3}, {8, 5} };

    long determinant = arr[0][0] * arr[1][1] - arr[1][0] * arr[0][1];
    
    std::cout << determinant;
}





/*
run:

11

*/

 

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