first commit

exercise2/first.java

@@ -0,0 +1,26 @@
+import java.util.Scanner;
+public class first{
+    public static void main(String[] args) {
+        int test1;
+        int test2;
+        double radius;
+        System.out.println("Test Data:");
+        System.out.println("a. "+(-5 + 8 * 6));
+        System.out.println("b. "+ ((55+9) % 9));
+        System.out.println("c. "+ (20 + -3*5 / 8));
+        System.out.println("d. "+ (5 + 15 / 3 * 2 - 8 % 3));
+
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Enter integer 1");
+        test1 = scan.nextInt();
+        
+        System.out.println("Enter integer 2");
+        test2 = scan.nextInt();
+
+        System.out.println("The PRODUCT of two integer: "+ (test1*test2));
+
+        System.out.println("Enter radius of a circle! (pi taken as 3!)");
+        radius = scan.nextDouble();
+        System.out.println("The area of circle: "+(3*radius*radius)+"\nThe perimeter of circle: "+(2*3*radius));
+    }
+}