Multiply Two Matrices

Author: JatinBagai

MultiplyTwoMatrice.cpp

@@ -0,0 +1,57 @@
+#include <iostream>
+using namespace std;
+
+int main(){
+
+    int r1, c1;
+    cout << "Enter the order of the first matrix: ";
+    cin >> r1 >> c1;
+    int r2, c2;
+    cout << "Enter the order of the second matrix: ";
+    cin >> r2 >> c2;
+    while(c1 != r2){
+        cout << "Enter order again" << "\n";
+        cout << "Enter the order of the first matrix: ";
+        cin >> r1 >> c1;
+        cout << "Enter the order of the second matrix: ";
+        cin >> r2 >> c2;
+    }
+    int arr1[r1][c1], arr2[r2][c2], arr3[r1][c2];
+    cout << "Enter the elements of the first matrix: " << "\n";
+    for(int i=0;i<r1;i++)
+    {
+        for(int j=0;j<c1;j++)
+        {
+            cin >> arr1[i][j];
+        }
+    }
+    cout << "Enter the elements of the second matrix: " << "\n";
+    for(int i=0;i<r2;i++)
+    {
+        for(int j=0;j<c2;j++)
+        {
+            cin >> arr2[i][j];
+        }
+    }
+    for(int i=0;i<r1;i++)
+    {
+        for(int j=0;j<c2;j++)
+        {
+            arr3[i][j] = 0;
+            for(int k=0;k<c1;k++)
+            {
+                arr3[i][j] += arr1[i][k]*arr2[k][j];
+            }
+        }
+    }
+    cout << "The resultant matrix is: " << "\n";
+    for(int i=0;i<r1;i++)
+    {
+        for(int j=0;j<c2;j++)
+        {
+            cout << arr3[i][j] << " ";
+        }
+        cout << "\n";
+    }
+    return 0;
+}