C # 6.0 - Unexpected '$' character

Question

I am new to programming and I just installed Visual Studio 2017. I created this code (from the book I’m studying), but this does not compile. I have a problem with string interpolation and I get an error:

Unexpected '$' character,

but I am using C # 6.0, so should this not be a problem?

static void Main(string[] args) { string comparison; WriteLine("Enter the number:"); double var1 = ToDouble(ReadLine()); WriteLine("Enter another number :"); double var2 = ToDouble(ReadLine()); if (var1 < var2) comparison = "less than"; else { if (var1 == var2) comparison = "equal to"; else comparison = "greater than"; } WriteLine($ "The first number is {comparison} the second number"); ReadKey(); } 

Answer 1

This is a very small problem :) Remove the space after $ :

 WriteLine($"The first number is {comparison} the second number"); 

See the correct structure in the documentation :

 $"<text> {<interpolated-expression> [,<field-width>] [:<format-string>] } <text> ..." 

I asked for an edit explaining that there shouldn't be spaces after $ , and now it points out: