2 dimension array with range check

2dimension_array

#include <iostream>

using namespace std;

class safetyArray {
  char **array_;
  int row_size_;
  int column_size_;
public:
  safetyArray(int row_size, int column_size);
  ~safetyArray() {
    for (int i = 0; i < row_size_; i++) {
      delete [] array_[i];
    }
    delete [] array_;
  }
  char &put(int row, int column);
  char get(int row, int column);
};

safetyArray::safetyArray(int row_size, int column_size) {
  array_ = new char*[row_size];
  for (int i = 0; i < row_size; i++) {
    array_[i] = new char[column_size];
  }
  if (!array_) {
    cout << "cannot allocate memory." << endl;
    exit(1);
  }
  row_size_ = row_size;
  column_size_ = column_size;
}

char &safetyArray::put(int row, int column) {
  if (row < 0 || row > row_size_ - 1) {
    cout << "out of array's range" << endl;
    exit(1);
  }
  if (column < 0 || column > column_size_ - 1) {
    cout << "out of array's range" << endl;
    exit(1);
  }
  return array_[row][column];
}

char safetyArray::get(int row, int column) {
  if (row < 0 || row > row_size_ - 1) {
    cout << "overflow error" << endl;
    exit(1);
  }
  if (column < 0 || column > column_size_ - 1) {
    cout << "overflow error" << endl;
    exit(1);
  }
  return array_[row][column];
}

int main(int argc, const char * argv[])
{
  safetyArray arr(2,5);

  arr.put(1, 1) = 'o';
  cout << "test " << arr.get(1, 1) << endl; // "test o"

  arr.put(12, 12); // "out of array's range"

  return 0;
}