Inheritance using calculator class with muti level inheritance

Author: akrishna0

Java/Codes/AdvCalc.class

@@ -0,0 +1,73 @@
+class Calculator{
+	
+
+	public int add(int num1, int num2){
+		return num1+num2;
+	}
+
+	public int substract(int num1, int num2){
+		return num1-num2;
+	}
+
+}
+
+class AdvCalc extends Calculator{
+	public int mult(int n, int m){
+		return n*m;
+	}
+
+	public int divide(int num, int deno){
+		return num/deno;
+	}
+}
+
+class ScientificCalc extends AdvCalc{
+	public int powerOfN(int a, int n){
+			if(n == 0)return 1;
+
+			return a *powerOfN(a, n-1);
+	}
+
+	public int fibo(int n){
+		if(n <= 1) return n;
+
+		return fibo(n-1) + fibo(n-2);
+	}
+}
+
+public class Inheritance{
+
+	public  static void main(String a[]){
+		Calculator cal = new Calculator();
+		int sum = cal.add(4,5);
+
+		System.out.println("SUM IS : " +sum);
+		
+		int sub = cal.substract(6,3);
+
+		System.out.println("Substraction IS : " + sub);
+		
+		AdvCalc calcu = new AdvCalc();
+
+		int add = calcu.add(4, 11);
+
+		int subs = calcu.substract(30, 14);
+
+		int mul = calcu.mult(4, 5);
+
+		int div = calcu.divide(20, mul);
+
+		System.out.println("Addition with Adv calc : " + add);	
+		System.out.println("Substraction with Adv calc : " + subs);
+		System.out.println("Multiplication with Adv calc : " + mul);
+		System.out.println("Division with Adv calc : " + div);
+
+
+		ScientificCalc sci = new ScientificCalc();
+		int power = sci.powerOfN(2, 3);
+		System.out.println(" a to the power of n : " + power);
+
+		int fib = sci.fibo(4);
+		System.out.println("Hey the fibonnaci no. : "+ fib);
+	}
+}