Course Introduction
Programs for practice
Following C++ program ask to the user to enter the two 3*3 matrix elements, to multiply them to form a new matrix which is the multiplication result of the two entered 3*3 matrices, then display the result on the screen:
Source Code: Multiply Two Matrices
/* C++ Program - Multiply Two Matrices */
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int mat1[3][3], mat2[3][3], mat3[3][3], sum=0, i, j, k;
cout<<"Enter first matrix element (3*3) : ";
for(i=0; i<3; i++)
{
for(j=0; j<3; j++)
{
cin>>mat1[i][j];
}
}
cout<<"Enter second matrix element (3*3) : ";
for(i=0; i<3; i++)
{
for(j=0; j<3; j++)
{
cin>>mat2[i][j];
}
}
cout<<"Multiplying two matrices...\n";
for(i=0; i<3; i++)
{
for(j=0; j<3; j++)
{
sum=0;
for(k=0; k<3; k++)
{
sum = sum + mat1[i][k] * mat2[k][j];
}
mat3[i][j] = sum;
}
}
cout<<"\nMultiplication of two Matrices : \n";
for(i=0; i<3; i++)
{
for(j=0; j<3; j++)
{
cout<<mat3[i][j]<<" ";
}
cout<<"\n";
}
getch();
}
Output
Enter first matrix element (3*3) :1 2 3 1 2 3 1 2 3
Enter second matrix element (3*3) : 1 2 3 1 2 3 1 2 3
Multiplying two matrices...
Multiplication of two Matrices :
6 12 18
6 12 18
6 12 18
