Write a C++ program to multiply array X and Y of order NxL and LxM. Note: We consider NxL = 3x3 and LxM = 3X3

Write a C++ program to multiply array X and Y of order NxL and LxM.
Note: We consider NxL = 3x3 and LxM = 3X3

Program Code:

#include<iostream>

using namespace std;

int main()

{

int X[3][3], Y[3][3], MULTI[3][3];

int sum=0, i, j, k;

cout<<"Enter element of first matrix : ";

cout<<endl;

for(i=0; i<3; i++)

{

for(j=0; j<3; j++)

{

cin>>X[i][j];

}

}

cout<<"Enter element of second matrix : ";

cout<<endl;

for(i=0; i<3; i++)

{

for(j=0; j<3; j++)

{

cin>>Y[i][j];

}

}

// Multiplying two matrices........

for(i=0; i<3; i++)

{

for(j=0; j<3; j++)

{

sum=0;

for(k=0; k<3; k++)

{

sum = sum + X[i][k] * Y[k][j];

}

MULTI[i][j] = sum;

}

}

cout<<"Multiplication of two Matrices X and Y is : ";

cout<<endl;

for(i=0; i<3; i++)

{

for(j=0; j<3; j++)

{

cout<<MULTI[i][j]<<" ";

}

cout<<endl;

}

return 0;

}

The program output is tested on www.jdoodle.com

Output:

Enter element of first matrix : 

1 2 3 4 5 6 7 8 9 

Enter element of second matrix : 

9 8 7 6 5 4 3 2 1

Multiplication of two Matrices X and Y is : 

30 24 18 

84 69 54 

138 114 90 

Thanks

Mukesh Rajput