java

import java.util.Scanner;

public class OneFunctionCalculator {

public static void main (String[] args) {
    
    float num1, num2;
    float result1, result2, result3, result4;
    
    Scanner s = new Scanner (System.in);
    
    
    System.out.print("Enter first number : ");
    num1 = s.nextFloat();
    
    System.out.print("Enter second number : ");
    num2 = s.nextFloat();
    
    result1 = num1 + num2;
    result2 = num1 - num2;
    result3 = num1 * num2;
    result4 = num1 / num2;
    
    System.out.println();
    System.out.println(num1 + " = " + num2 + " = " + result1);
    System.out.println(num1 + " - " + num2 + " = " + result2);
    System.out.println(num1 + " * " + num2 + " = " + result3);
    System.out.println(num1 + " / " + num2 + " = " + result4);
}

}