// For: https://forum.arduino.cc/t/array-not-printing/1066914
// December 18, 2022

/**********Global Variables**********/
const int metrics_num = 3;             // # of financial data metric for employees to track, array row
const int employees_num = 5;           // # of employees, array column
int employees_data[metrics_num][employees_num]; // mxn array
int bonus[9];                        // # of employee bonus pay ranges

/**********Setup**********/
void setup()
{
  Serial.begin(9600);
  data_entry(employees_num, employees_data);
  pay_calculations(metrics_num, employees_num, employees_data);
}

/**********Main Loop**********/
void loop()
{
}

/**********Function Definition**********/
void data_entry(int n, int data[][employees_num])
{
  //enter data for each employee
  for (int i = 0; i < n; i++)
  {
    Serial.print("Enter gross sales for employee ");
    Serial.print(i + 1);
    Serial.print(": $");
    // waits until data is entered into serial monitor
    while (Serial.available() == 0) {} 
    // takes incoming characters and converts it to a number. 
    // This is read into the buffer altogether. 
    // Row 1 is contstand, updates column num each pass
    data[0][i] = Serial.parseInt();
    Serial.println(data[0][i]);        // test for printing value entered from array

    // flush input buffer, do before asking for new input.  
    // Notes: https://forum.arduino.cc/t/serial-input-basics-updated/382007
    while (Serial.available() > 0) {
      Serial.read();
    }
  }
}

// calculate bonus and fill these into employee data array
void pay_calculations(int m, int n, int data[][employees_num])
{
  // Bonus
  // multiply each employee data element by bonus %
  // store values in Row 2 of array for each element

  for (int i = 0; i < n; i++)
  {
    // Multiplies an employees gross weekly pay by 9% for bonus, 
    // and stores in Row 2 of employee_data array.
    //
    // Use a 'float' calculation and then convert it to integer.
    // The conversion to integers takes the integer part (rounding down).
    float b = (float) data[0][i] * 0.09;
    data[1][i] = (int) b;

    Serial.print("Empoyee ");
    Serial.print(i+1);
    Serial.print(", pay: ");
    Serial.print(data[0][i]);   // test for printing Row 1, column 'n'
    Serial.print(", bonus: ");
    Serial.println(data[1][i]); // test for printing Row 2, column 'n'
  }
}