CODEWITHSUNDEEP
c++multidimensional-array
woofMaranon
woofMaranon

Reputation: 154

Compute the sums of the rows and columns of a two dimensional array

I tried to get the sum of the rows and columns of a two dimensional array, but the result is 0. I don't know what my mistake is. Thank you for you help.

#include <iostream>
#include <string.h>

using namespace std;

int main()
{
    int characters[50][50],rc,sum=0,horizontal[10]={0},vertical[10]={0},c,r;
   
    cout<<"Please enter integer : ";
    cin>>rc;
    cout <<" The matrix is : \n";
   
    for(r=0;r<rc;r++){
        for( c=0;c<rc;c++){
            sum=sum+1;
            characters[r][c]=sum;
            cout<<characters[r][c]<< " ";
            horizontal[r]=horizontal[r]+characters[r][c];
            vertical[c]=vertical[c]+characters[c][r];
        }
           
        cout<< "The sum of horizontal is = " <<horizontal[r]<<" and The sum of vertical is "<<vertical[c];;
        cout<<endl;
   }
   
   return 0;
}

This is the result of this code

Please enter integer : 3

    The matrix is : 
    1 2 3 The sum of horizontal is = 6 and The sum of vertical is 0
    4 5 6 The sum of horizontal is = 15 and The sum of vertical is 0
    7 8 9 The sum of horizontal is = 24 and The sum of vertical is 0

Upvotes: 0

Views: 451

Answers (1)

Hossein
Hossein

Reputation: 489

  1. You can't compute sum of vertical before fill the matrix.

  2. vertical[c] = vertical[c] + characters[c][r] is wrong.

    #include <iostream>
#include <string.h>
using namespace std;

int main()
{
   int characters[50][50],rc,sum=0,horizontal[10]={0},vertical[10]={0},c,r;

   cout<<"Please enter integer : ";
   cin>>rc;
   cout <<" The matrix is : \n";

   for(r=0;r<rc;r++){

    for( c=0;c<rc;c++){
      sum=sum+1;
      characters[r][c]=sum;
      cout<<characters[r][c]<< " ";
   }
   cout << endl;
}

for(r=0;r<rc;r++){

   for( c=0;c<rc;c++){
      horizontal[r]=horizontal[r]+characters[r][c];
      vertical[r] = vertical[r] + characters[c][r];

       }

       cout<< "The sum of horizontal is = " <<horizontal[r]<<" and The sum of vertical is "<<vertical[r];
       cout<<endl;

}

return 0;
}

Upvotes: 1

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