[Shreyash]: Added code to print table of power of 2

Author: shreyashdj

Repetition Problems/For Loop/PowerOfTwo.js

@@ -0,0 +1,15 @@
+/* 
+    Write a program that takes a command-line argument n and prints table of the powers of 2 
+    that are less than or equal to 2^n.
+*/
+
+const prompt = require("prompt-sync")();
+console.log();
+let power = parseInt(prompt(" Enter the power : "))
+let result = 1;
+console.log(" Printing powers of 2 :");
+for (let i = 1; i <= power; i++) {
+    result = result * 2;
+    console.log(" 2^" + i + " = " + result);
+}
+console.log();