## C++ Program to multiply two 2D arrays and display the 1st, 2nd and 3rd arrays in proper format

/* 11. Write a program to multiply two 2-D arrays and display the 1st, 2nd and 3rd array in proper format. */
#include<iostream.h>
#include<conio.h>
void main()
{
int a[100][100],b[100][100],c[100][100],i,j,k,row,col,coln;
clrscr();
cout<<"Enter first 2-D matrix row size->"<<endl;
cin>>row;
cout<<"Enter first 2-D matrix column size->"<<endl;
cin>>col;
cout<<"Second 2-D matrix row size cann't be changed"<<endl;
cout<<"Therefore,enter column size->"<<endl;
cin>>coln;
cout<<"Enter elements in the first 2-D matrix"<<endl;
for(i=0;i<row;i++)
{
for(j=0;j<col;j++)
cin>>a[i][j];
}
cout<<"Enter elements in the second 2-D matrix"<<endl;
for(i=0;i<col;i++)
{
for(j=0;j<coln;j++)
cin>>b[i][j];
}
cout<<"First 2-D matrix is displayed"<<endl;
for(i=0;i<row;i++)
{
for(j=0;j<col;j++)
{
cout<<"\t"<<a[i][j];
}
cout<<endl;
}
cout<<"Second 2-D matrix"<<endl;
for(i=0;i<col;i++)
{
for(j=0;j<coln;j++)
{
cout<<"\t"<<b[i][j];
}
cout<<endl;
}
for(i=0;i<row;i++)
{
for(j=0;j<coln;j++)
{
c[i][j]=0;
for(k=0;k<coln;k++)
c[i][j]=a[i][k]*b[k][j]+c[i][j];
}
}
cout<<"After multiplication resultant matrix is->"<<endl;
for(i=0;i<row;i++)
{
for(j=0;j<coln;j++)
{
cout<<"\t"<<c[i][j];
}
cout<<endl;
}
getch();
}