Create Matrix Multiplication.cpp

Author: Krishna-Sen-Programming-World

Matrix Multiplication.cpp

@@ -0,0 +1,41 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+#define a 2
+#define b 3
+#define c 2
+
+void matrix_mul(vector<vector<int>> &arr1, vector<vector<int>> &arr2, vector<vector<int>> &arr3)
+// row1*col1
+// col1*col2
+// i = row1
+// j = col2
+// k = col1
+{
+	for (int i = 0; i < a; i++)
+	{
+		for (int j = 0; j < c; j++)
+		{
+			arr3[i][j] = 0;
+			for (int k = 0; k < b; k++)
+			{
+				arr3[i][j] += (arr1[i][k] * arr2[k][j]);
+			}
+		}
+	}
+}
+
+int main()
+{
+	vector<vector<int>> arr1 = {{1, 2, 3}, {4, 5, 6}};
+	vector<vector<int>> arr2 = {{10, 11}, {20, 21}, {30, 31}};
+	vector<vector<int>> arr3(a, vector<int>(c));
+	matrix_mul(arr1, arr2, arr3);
+
+	for (int i = 0; i < a; i++)
+	{
+		for (int j = 0; j < c; j++)
+			cout << arr3[i][j] << " ";
+		cout << endl;
+	}
+}