Intro to CS - initial structure problem set 01.02

computer-science/01-introduction-to-cs-and-programming-mit/src/01-01-problem-set.js

@@ -45,20 +45,14 @@ prompt.get([
   }
 ], function( err, results ) {
 
-  console.log( results );
-
   // constants
   var PERIOD            = 12;
 
   // input variables
-  var initialBalance    = parseFloat( results.balance, 10 );
-  var interest          = parseFloat( results.interest, 10 );
-  var minPayment        = parseFloat( results.minimum, 10 );
+  var initialBalance    = parseFloat( results.balance );
+  var interest          = parseFloat( results.interest );
+  var minPayment        = parseFloat( results.minimum );
 
-  console.log( initialBalance );
-  console.log( interest );
-  console.log( minPayment );
-  
   // output variables
   var month             = 1;
   var minMonthlyPayment = 0;

computer-science/01-introduction-to-cs-and-programming-mit/src/01-02-problem-set.js

@@ -5,6 +5,48 @@
 *
 * Paying Debt Off In a Year 
 *
+* - interest is compounded monthly according to the balance at
+*     the start of the month 
+* - monthly payment must be a multiple of $10 and is the same for all months
+* -  it is possible for the balance to become negative using this scheme
 */
 
+var prompt = require( 'prompt' );
 
+prompt.start();
+prompt.get([
+  {
+    name : 'balance',
+    description : 'Enter the outstanding balance on your credit card'
+  },
+  {
+    name : 'interest',
+    description : 'Enter the annual credit card interest rate as a decimal'
+  }
+], function( err, results ) {
+
+ // constants
+ var PERIOD = 12;
+
+ // input variables
+ var initialBalance = parseFloat( results.balance );
+ var interest       = parseFloat( results.interest );
+
+ // helper variables
+ var monthPayment = 0;
+ var monthsNeeded = 0;
+ var totalBalance = initialBalance;
+ var monthInterest = interest / 12;
+
+ while ( totalBalance > 0 ) {
+ 
+   
+ 
+ }
+
+ console.log( '======= RESULT =======');
+ console.log( 'Monthly payment to pay off debt in 1 year:' );
+ console.log( 'Number of months needed:' );
+ console.log( 'Balance' );
+
+});