Answer:
In Java:
import java.util.Scanner;
public class Main
{
 public static void main(String[] args) {
  int regularhour,overtimehour;
  float regularpay,overtimepay;
  Scanner input = new Scanner(System.in);
  
  System.out.print("Regular Hour: ");
  regularhour = input.nextInt();
  
  System.out.print("Overtime Hour: ");
  overtimehour = input.nextInt();
  
  System.out.print("Regular Pay: ");
  regularpay = input.nextFloat();
  
  System.out.print("Overtime Pay: ");
  overtimepay = input.nextFloat();
  
  float regulargross = regularhour * regularpay;
  float overtimegross = overtimehour * overtimepay;
  float totalgross = regulargross + overtimegross;
  
  System.out.println("Regular Gross Pay: "+regulargross);
  System.out.println("Overtime Gross Pay: "+overtimegross);
  System.out.println("Total Gross Pay: "+totalgross);
  
 }
}
Explanation:
This line declares regularhour and overtimehour as integer
  int regularhour,overtimehour;
This line declares regularpay and overtimepay as float
  float regularpay,overtimepay;
  Scanner input = new Scanner(System.in);
  
This prompts the user for regular hour
  System.out.print("Regular Hour: ");
This gets the regular hour
  regularhour = input.nextInt();
  
This prompts the user for overtime hour
  System.out.print("Overtime Hour: ");
This gets the overtime hour
  overtimehour = input.nextInt();
  
This prompts the user for regular pay
  System.out.print("Regular Pay: ");
This gets the regular pay
  regularpay = input.nextFloat();
  
This prompts the user for overtime pay
  System.out.print("Overtime Pay: ");
This gets the overtime pay
  overtimepay = input.nextFloat();
  
This calculates the regular gross pay
  float regulargross = regularhour * regularpay;
This calculates the overtime gross pay
  float overtimegross = overtimehour * overtimepay;
This calculates the total gross pay
  float totalgross = regulargross + overtimegross;
  
This prints the regular gross pay
  System.out.println("Regular Gross Pay: "+regulargross);
This prints the overtime gross pay
  System.out.println("Overtime Gross Pay: "+overtimegross);
This prints the total gross pay
  System.out.println("Total Gross Pay: "+totalgross);