Functions act as placeholders for the data they output. Basically, you can assign the output of a function to a variable, just like any normal data.FreeCodeCamp offers a curriculum and in this video we cover their lesson called Assignment with a Returned Value. You need to assign the return values to some variable in your code and then display the values of those variables in Console.WriteLine. We can take the return value of a function and assign it to a variable. Assume we have pre-defined a function sum which adds two numbers together. When we have variables and we're assigning it to a value what's the saying is that whenever we have a whatever is on the right of the equal sign. Both parameter passing to a function, and passing of return values from a function, work the same as assignment does. In place of the void out in front of the function name we can put a return type that indicates what kind of value the function will be sending back. This means we can take the return value of a function and assign it to a variable.