IDE's will not allow my minus sign

Question

I'm trying to do simple arithmetic:

Num01 + num02

Num01 - num02

Num01 * num02

Num01 / num02

But I keep getting an error for the subtraction statement. I've tried with 3 different IDE's now and they all say the exact same error. I'm thinking my - sign has got the wrong ASCII code or something??

Help, it's put the brakes on my learning and making me feel miserable :(

I've never seen anything like this before, usually I install an IDE and off I go.

I've tried Monodevelop, Visual studio code, and Visual studio community.

They all say the same error. I can't remember it exactly word for word and I'm typing this from my phone at the moment. But if the compilers accept all the other statements, then why not the minus.

Any help appreciated. Cheers.

Windows 7 x64

Answer 1

So initially I tried what was discussed, but the - I'm using is also ASCII code 45. So, I cut and pasted the other − (ASCII 226 136 146), and that didn't work either...

The original code in question is:

Console.WriteLine(num01 + " + " + num02 + " = " + num01 + num02);
Console.WriteLine(num01 + " - " + num02 + " = " + num01 - num02); // This line gives an error
Console.WriteLine(num01 + " * " + num02 + " = " + num01 * num02);
Console.WriteLine(num01 + " / " + num02 + " = " + num01 / num02);

Error CS0019: Operator '-' cannot be applied to operands of type 'string' and 'double' (CS0019)

So it made me think about BODMAS, and what if I enclose the sums in brackets first, so I rewrote the code to:

Console.WriteLine(num01 + " + " + num02 + " = " + (num01 + num02));
Console.WriteLine(num01 + " - " + num02 + " = " + (num01 - num02));
Console.WriteLine(num01 + " * " + num02 + " = " + (num01 * num02));
Console.WriteLine(num01 + " / " + num02 + " = " + (num01 / num02));

And now it works!

I've no idea why it allowed the other operators but not the minus, but enclosing them in brackets solved it.

Thanks for the help Loaf! =)