Machine Problem in AngulaJS

Write a temperature converter program that will accept temperature in Fahrenheit or Celsius  from the user and then the program will allow the user to convert temperature in Fahrenheit or Celsius, vice versa.

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Program Listing

<!-- index.htm
  Author   : Prof. Jake Rodriguez Pomperada, MAED-IT, MIT
  Date     : July 21, 2021  Wednesday   8:55 AM
  Place    : Bacolod City, Negros Occidental
  Websites : and
  Email    :
  <title>Temperature Converter in AngularJS</title>
body {
  font-family: arial;
  font-size: 25px;
  font-weight: bold;
<script type="text/javascript" src="angular.min.js">
<body >
    <div ng-app ng-init="f=32;c=0">
    <b>Temperature Converter in AngularJS</b><br>
      Fahrenheit to Celsius: <input type="number" ng-model="f"> {{((f-32) * 5 / 9) | number : 2}} &deg;c
      Celsius to Fahrenheit: <input type="number" ng-model="c"> {{c * 9 / 5 + 32 | number : 2}} &deg;f