Question

Create a square array and fill out as shown below. Use nested loop for this step. 1 3 5 7 9 2 4 6 8 10 3 5 7 9 11 4 6 8 10 12 5 7 9 11 13 Then create two 1D arrays to with row and column sum of the items. You have then 15 25 35 45 55 for the column sum, and 25 30 35 40 45 for the row sum. Print row and column sum arrays on screen.

Answer 1

Code

#include<iostream>

using namespace std;

int main()
{
   int size=5;
   int arr[5][5];
   int row[5], col[5];
   int val;
   for (int i = 0; i < size; i++)
   {
       val = i + 1;
       for (int j = 0; j < size; j++)
       {
           arr[i][j] = val;
           val += 2;
       }
   }
   //row sum
   for (int i = 0; i < size; i++)
   {
       int sum = 0;
       for (int j = 0; j < size; j++)
           sum += arr[i][j];
       row[i] = sum;
   }
   //col sum
   for (int i = 0; i < size; i++)
   {
       int sum = 0;
       for (int j = 0; j < size; j++)
           sum += arr[j][i];
       col[i] = sum;
   }
   cout << "Row sum: ";
   for (int i = 0; i < 5; i++)
       cout << row[i] << " ";

   cout << "\n\nCol sum: ";
   for (int i = 0; i < 5; i++)
       cout << col[i] << " ";
   cout << endl << endl;
   system("pause");
   return 0;
}

output

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