[Cpp-Programming] Re: help

Reep,

both programs are good except few statements..

 

First Program:

Here you defined row and column = 4 but your loop a<row-1 i.e. a<3 will execute only three times. I believe u are trying to add 4x4 matrix, so just change all the for loops condition to either a <= row-1 or a < row. If u want 3x3 matrix, then define row and column as 3 and make changes in all for loops as suggested above.

 

Second thing, remove the defination of c d e f g h, it is unneccassarily occupying the memory.

 

Second program:

Looks good but i am not sure about cin>>c>>d; will it ask for value once and assign it to both the variables i.e. c and d? I mostly worked on C, so never used cin/cout, sorry.

 

Let me know if u have any question.

 

~Atul

On Thu, Mar 12, 2009 at 8:56 PM, reepakmajhi.com@gmail.com <reepakmajhi.com@gmail.com> wrote:

is this 2 program code right of  two matrix addition



1st program



#include<iostream.h>
#define row 4
#define col 4

int main()
{
   int i[row][col],j[row][col],k[row][col];
   int a,b,c,d,e,f,g,h;

   for(a=0;a<row-1;a++)
 {  cout<<"\n";
       for(b=0;b<col-1;b++)
          cin>>i[a][b];
}
for(a=0;a<row-1;a++)
  { cout<<"\n";
       for(b=0;b<col-1;b++)
          cin>>j[a][b];
          }

 for(a=0;a<row-1;a++)
  { cout<<"\n";
       for(b=0;b<col-1;b++)
          k[a][b]= j[a][b]+i[a][b];  }


 for(a=0;a<row-1;a++)
   {cout<<"\n";
       for(b=0;b<col-1;b++)
         cout<<"\t";
          cout<<k[a][b];}

         system("pause"); }





2nd program




#include<iostream.h>


int main()
{
   int i[10][10],j[10][10],k[10][10];
   int a,b,c,d,e,f;
  cin>>c>>d;
     cin>>e>>f;
   for(a=0;a<c;a++)
 {  cout<<"\n";
       for(b=0;b<d;b++)
          cin>>i[a][b];
}
for(a=0;a<e;a++)
  { cout<<"\n";
       for(b=0;b<f;b++)
          cin>>j[a][b];
          }

 for(a=0;a<c;a++)
  { cout<<"\n";
       for(b=0;b<d;b++)
          k[a][b]= j[a][b]+i[a][b];  }


 for(a=0;a<c;a++)
   {cout<<"\n";
       for(b=0;b<d;b++)
         cout<<"\t";
          cout<<k[a][b];}

         system("pause"); }


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