Write a program for multiplication of two matrices
OR
Write a program to multiply two matrices
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int a[10][10],b[10][10],c[10][10];
int i, j, n, m;
int p,q,k,x[10];
cout<<"enter no of rows of 1st matrix\n";
cin>>m;
cout<<"enter no of colomns of 1st matrix\n";
cin>>n;
cout<<"enter no of rows of 2nd matrix\n";
cin>>p;
cout<<"enter no of colomn 2nd matrix\n";
cin>>q;
if(n==p)
{
cout<<"\n\nenter the elements of 1st matrix\n";
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
{
cout<<"a["<<i+1<<"]["<<j+1<<"]:= ";
cin>>a[i][j];
}
}
cout<<"\n\nfirst matrix u have entered is:="<<endl;
for(i=0;i<m;i++)
{
for(j=0;j<n;j++)
{
cout<<"\t"<<a[i][j];
}
cout<<endl;
}
cout<<"\n\nenter the elements of 2nd matrix\n";
for(i=0;i<p;i++)
{
for(j=0;j<q;j++)
{
cout<<"b["<<i+1<<"]["<<j+1<<"]:= ";
cin>>b[i][j];
}
}
cout<<"\n\n2nd matrix u have entered is:="<<endl;
for(i=0;i<p;i++)
{
for(j=0;j<q;j++)
{
cout<<"\t"<<b[i][j];
}
cout<<endl;
}
for(i=0;i<m;i++)
{
for(j=0;j<q;j++)
{
c[i][j]=0;
{
for(k=0;k<n;k++)
{
x[k]=0;
x[k]=a[i][k]*b[k][j];
c[i][j]=c[i][j]+x[k];
}
}}
}
cout<<"\n\nmultiplication of two matrices is:="<<endl;
for(i=0;i<m;i++)
{
for(j=0;j<q;j++)
{
cout<<"\t"<<c[i][j];
}
cout<<endl;
}
}
else
{
cout<<"matrices cannot be multiplied";
}
getch();
}
==OUTPUT==
enter no of rows of 1st matrix
2
enter no of column of 1st matrix
2
enter no of rows of 1st matrix
2
enter no of column of 1st matrix
2
enter the elements of 1st matrix
a[1]=1
a[2]=2
a[3]=2
a[4]=3
first matrix u have entered is:=
1 2
2 3
enter the elements of 2nd matrix
b[1]=2
b[2]=3
b[3]=2
b[4]=1
2nd matrix u have entered is
2 3
2 1
multiplication of two matrices is
6 5
8 9
