Problem with adding integers and decimals together in C#

Question

I want to make a program that converts Fahrenheit to Kelvins but in the conversion, you need to add 273.15. My current code for the conversion is

int finalTemp = (temp1 - 32) * 5 / 9 + 273.15;

but it gives:

Error CS0266 Cannot implicitly convert type 'double' to 'int'. An explicit conversion exists (are you missing a cast?)

How do I make it recognize 273.15 as a decimal?

Answer 1

The reason that you are getting this error is because finalTemp is of the type int and that can only hold integers. If temp1 is either a double or int, then you can do:

double finalTemp = (temp1 - 32) * 5 / 9 + 273.15;

This code will get the temperature as a double, (which can hold decimals).

However, if finalTemp is an int, as you initially had, it will not be possible to get it to

recognize 273.15 as a decimal.