That is my code can you modify it using C++ so that in the end a functions is be

Question

That is my code can you modify it using C++ so that in the end a functions is being called upon to output the new arrays at the bottom instead

#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;

void printArray(int arr[][21], int rows, int cols);
int main() {
   int rows, cols;
   cout << fixed << setprecision(1);
   cout << "Enter the number of rows and columns of the array: ";
   cin >> rows;
       cin >> cols;
   while ((rows > 35 || cols > 20)) {
       cout << "Invalid dimensions. ";
       cout << "Enter the number of rows and columns of the array: ";
       cin >> rows >> cols;
   }

   double arr[35][20] = { 0 };
   double epsilon;
   cout << "please enter the value of epsilon";
   cin >> epsilon;
   double top, bottom, left, right;
   cout << "Enter the Top edge, bottom edge, left edge and right edge temperatures(in that order): ";
   cin >> top >> bottom >> left >> right;
   while ((top < 0 || top > 300 || bottom < 0 || bottom > 300 || left < 0 || left > 300 || right < 0 || right > 300)) {
       cout << "All temperatures must be between 0 and 300. ";
       cout << "Enter the Top edge, bottom edge, left edge and right edge temperatures: ";
       cin >> top >> bottom >> left >> right;
   }
   for (int i = 1; i < cols - 1; i++) {
       arr[0][i] = top;
       arr[rows - 1][i] = bottom;
   }
   for (int i = 1; i < rows - 1; i++) {
       arr[i][0] = left;
       arr[i][cols - 1] = right;
   }
   arr[0][0] = (arr[0][1] + arr[1][0]) / 2;
   arr[0][cols - 1] = (arr[1][cols - 1] + arr[0][cols - 2]) / 2;
   arr[rows - 1][0] = (arr[rows - 1][1] + arr[rows - 2][0]) / 2;
   arr[rows - 1][cols - 1] = (arr[rows - 2][cols - 1] + arr[rows - 1][cols - 2]) / 2;

   for (int i = 0; i < rows; i++) {
       for (int j = 0; j < cols; j++) {
           if (arr[i][j] < 100) cout << " ";
           if (arr[i][j] < 10) cout << " ";
           cout << " " << arr[i][j];
       }
       cout << " ";
   }
   cout << " ";
   int iterations = 0;
  
   bool allEpsilon = false;
   while (!allEpsilon)
   {
       allEpsilon = true;
       for (int i = 1; i < rows - 1; i++) {
           for (int j = 1; j < cols - 1; j++) {
               double temp = arr[i][j];
               arr[i][j] = (arr[i - 1][j] + arr[i][j - 1] + arr[i + 1][j] + arr[i][j + 1]) / 4.0;
               if (fabs(arr[i][j] - temp) > epsilon) allEpsilon = false;
           }
       }
       iterations++;
   }

  
   {

       cout << "The plate reached equillibrium after " << iterations << " iterations ";

       for (int i = 0; i < rows; i++) {
           for (int j = 0; j < cols; j++) {
               if (arr[i][j] < 100) cout << " ";
               if (arr[i][j] < 10) cout << " ";
               cout << " " << arr[i][j];
           }
           cout << " ";
       }
   }
}

Explanation / Answer

Answer :

void printArray(int arr[][21], int rows, int cols)

{

   for (int i = 0; i < rows; i++) {
           for (int j = 0; j < cols; j++) {
               if (arr[i][j] < 100) cout << " ";
               if (arr[i][j] < 10) cout << " ";
               cout << " " << arr[i][j];
           }
           cout << " ";
       }

}

Call The Method As :

printArray(arr,35,20);

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