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Matrix Multiplication in C++

Matrix is 2D[Dimensional] Array. So here in this program we are going to multiple 2 or more matrix.



Program of Matrix Multiplication in C++

  • #include <iostream>

  • using namespace std;

  • int main()

  • {

  • int a[10][10],b[10][10],mul[10][10],r,c,i,j,k;

  • cout<<"enter the number of row=";

  • cin>>r;

  • cout<<"enter the number of column=";

  • cin>>c;

  • cout<<"enter the first matrix element=\n";

  • for(i=0;i<r;i++)

  • {

  • for(j=0;j<c;j++)

  • {

  • cin>>a[i][j];

  • }

  • }

  • cout<<"enter the second matrix element=\n";

  • for(i=0;i<r;i++)

  • {

  • for(j=0;j<c;j++)

  • {

  • cin>>b[i][j];

  • }

  • }

  • cout<<"multiply of the matrix=\n";

  • for(i=0;i<r;i++)

  • {

  • for(j=0;j<c;j++)

  • {

  • mul[i][j]=0;

  • for(k=0;k<c;k++)

  • {

  • mul[i][j]+=a[i][k]*b[k][j];

  • }

  • }

  • }

  • //for printing result

  • for(i=0;i<r;i++)

  • {

  • for(j=0;j<c;j++)

  • {

  • cout<<mul[i][j]<<" ";

  • }

  • cout<<"\n";

  • }

  • return 0;

  • }




Output –

enter the number of row=3

enter the number of column=3

enter the first matrix element=

1 2 3

1 2 3

1 2 3

enter the second matrix element=

1 1 1

2 1 2

3 2 1

multiply of the matrix=

14 9 8

14 9 8

14 9 8




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