I need help programming a Fahrenheit to Celsius Converter : I don't know what I'm doing wrong. ive looked but I cant find the answer. im trying to have a text box, and a button next to it. When you click the button, I want it to convert it to fahrenheit or celsius and display it in another text box. I only have the fahrenheit to celsius done and I can just copy the code over when Im done


    <!DOCTYPE html>
    <html>
    <head>
    <center>
    <h1> Fahrenheit to Celsius Converter</h1> 
    <font size="+1" > 
    <p> Fahrenheit to Celsius</p>
    <input type="text" name="ftc" id="ftc"/> <button type="button" onclick="fahrenheitCelsius()" /> Click to Convert </button>
    <p>Celsius to Fahrenheit </p>
    <input type="text" name="ctf" id="ctf" /> <button type="button" onclick="celsiusFahrenheit()" /> Click to Convert </button>
    <p> Answer </p>
    <input type="text" name="answer box" id="answer/> 
    <script>
    
     function fahrenheitCelsius() {  
        var fsc = parseFloat(document.getElementById('ftc').value);
        var cfc = (fsc-32) * (5/9);
        document.getElementById('answer box').value = cfc;
        return false; 
        document.writeIn(<input type="text" name="answer box" id="answer"/>)
        }
     
    </script>
    </font>
    </head>
    </html>