here is the code for c++=====>

# include <iostream.h>
# include <conio.h>
void main ()
{
clrscr();
int i,j,k,sum,a,b,c ;
int m[10][10];
int n[10][10];
int l[10][10];
cout<<"ENTER THE NO. OF ROWS AND COLUMN OF FIRST MATRIX";
cin>>a>>b;
cout<<"ENTER THE VALUES OF FIRST MATRIX-";
for(i=0;i<a;i++ )...