In mathematics, matrix multiplication or matrix product is a binary operation that produces a matrix from two matrices. Two matrices are multipliable if number of columns of 1^st matrix is equal to the number of rows of 2^nd matrix. Learn How to Multiply two matrices

C++ Program to Perform Matrix Multiplication using Multidimensional Arrays. The program multiplies two matrices and prints the result matrix. The program takes two matrices and multiplies them. If number of columns of matrix A is equal to number of rows of matrix B, then these matrices can be Multiply.

// C++ Program to Perform Matrix Multiplication using Multidimensional Arrays

#include<iostream>

#include<conio.h>

using namespace std;

int main() {

                int row1, col1, row2, col2;

                cout << "Enter Number of Rows and Colums of 1st Matrix: ";

                cin >> row1 >> col1;

                int arr1[row1][col1]= {0};

                cout << "Enter Number of Rows and Colums of 2nd Matrix: ";

                cin >> row2 >> col2;

                cout << endl;

                int arr2[row2][col2]= {0};

                if(col1==row2) {

                                for(int i=0; i<row1; i++) {

                                                for(int j=0; j<col1; j++) {

                                                                cout<<"Enter A"<<i+1<<j+1<<": ";

                                                                cin>>arr1[i][j];

                                                }

                                }

                                cout<<"\n1st Matrix: "<<endl;

                                for(int i=0; i<row1; i++) {

                                                for(int j=0; j<col1; j++) {

                                                                cout<<arr1[i][j]<<"\t";

                                                }

                                                cout<<endl;

                                }

                                cout << endl;

                                for(int i=0; i<row2; i++) {

                                                for(int j=0; j<col2; j++) {

                                                                cout<<"Enter B"<<i+1<<j+1<<": ";

                                                                cin>>arr2[i][j];

                                                }

                                }

                                cout<<"\n2nd Matrix: "<<endl;

                                for(int i=0; i<row2; i++) {

                                                for(int j=0; j<col2; j++) {

                                                                cout<<arr2[i][j]<<"\t";

                                                }

                                                cout<<endl;

                                }

                                int arr3[row1][10]= {0};

                                for(int i=0; i<row1; i++) {

                                                for(int j=0; j<col2; j++) {

                                                                for(int k=0; k<col1; k++) {

                                                                                arr3[i][j]+=arr1[i][k]*arr2[k][j];

                                                                }

                                                }

                                }

                                cout<<"\nAfter Multiplication: "<<endl;

                                for(int i=0; i<row1; i++) {

                                                for(int j=0; j<col2; j++) {

                                                                cout<<arr3[i][j]<<"\t";

                                                }

                                                cout<<endl;

                                }

                } else {

                                cout<<"\n\nThese Matrices Cannot Be Multiplied......"<<endl;

                                cout<<"\t\tEnter Again\n\n"<<endl;

                                main();

                }

}