TheAlgorithms-C-Plus-Plus/Strassen Matrix Multiplication.cpp

#include <iostream>
using namespace std;

Multiply(int A[][], int B[][], int n)
{
	if (n==2)
	{
		int p1= (a[0][0] + a[1][1])*(b[0][0]+b[1][1]);
	  	int p2= (a[1][0]+a[1][1])*b[0][0];
	 	int p3= a[0][0]*(b[0][1]-b[1][1]);
	 	int p4= a[1][1]*(b[1][0]-b[0][0]);
	 	int p5= (a[0][0]+a[0][1])*b[1][1];
	 	int p6= (a[1][0]-a[0][0])*(b[0][0]+b[0][1]);
	 	int p7= (a[0][1]-a[1][1])*(b[1][0]+b[1][1]);


	 	int c[n][n];
		c[0][0]=p1+p4-p5+p7;
 		c[0][1]=p3+p5;
 		c[1][0]=p2+p4;
 		c[1][1]=p1-p2+p3+p6;

 	 	return c[][];
	}
	else
	{
		
	}

}

int main()
{
	int p,q,r,s;
	cout<<"Enter the dimensions of Matrices";
	cin>>n;
	int A[n][n],;
	int B[n][n],;
	cout<<"Enter the elements of Matrix A";
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j <n ; j++)
		{
			cin>>A[i][j];
		}
	}


	cout<<"Enter the elements of Matrix B";
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j <n ; j++)
		{
			cin>>B[i][j];
		}
	}

	Multiply(A, B, n);
	return 0;
}