It looks like you are using left and right quotes, try retyping that in a plain text editor like Notepad (Windows), TextEdit (Mac), or gedit (linux). That way it will have normal quotes, e.g. ". Note: In TextEdit you will need to press Cmd+Shift+T to make it plain text.
@DeepakKumar If you don't want to go all out and use an IDE, I found that TextPad is a great basic editor to work with. Allows multiple files open at once, can do syntax highlighting and has line numbering. You really don't want too much else to start with.
". Note: In TextEdit you will need to press Cmd+Shift+T to make it plain text.