Thread: How to use a user defined function to convert Fahrenheit to Celcius

Hello, I am very new to c++ programming and I a trying to create a program with a user defined function to convert Fahrenheit to Celcius. Here is what I have so far, but it does not run:

Code:

 
//this program converts Fahrenheit to Celcius
#include<iostream>
using namespace std;

int main()
{
    float Fahrenheit, Celcius;

    cout << "Enter the temperature in Fahrenheit: ";
    cin >> Fahrenheit;
    Celcius = (5.0/9.0)*(Fahrenheit - 32);
    cout<<"The temperature in Celcius: " <<Celcius<<endl;
   
    return 0;
}

When I run this, I get an error that Celcius was not declared in the scope, even though I thought I had declared it at the top. Additionally, I am not sure if I should be using float or double. Any help or guidance on this would be appreciated! Thank you.

@OP: And the correct spelling is Celsius btw