error: expected `;' before string constant

[dkjdod]

I keep getting these error messages:

piApproximator.cpp:30:13: warning: missing terminating " character
piApproximator.cpp:30: error: missing terminating " character
piApproximator.cpp:31:46: warning: missing terminating " character
piApproximator.cpp:31: error: missing terminating " character
piApproximator.cpp: In function ‘int main()’:
piApproximator.cpp:31: error: ‘expansion’ was not declared in this scope
piApproximator.cpp:31: error: expected unqualified-id before string constant
piApproximator.cpp:31: error: expected `;' before string constant

These are lines 29 and 31:
cout << "This program approximates pi using an n-term series expansion.";
cout << endl << "Enter the value of n>";
cin >> n;

I'm sure there is no extra " floating around. The program runs on compilr.com, but when I try to run it on pico, these error messages pop up, and it fails. I have to run it on pico for school.

[AbstractionAnon]

There is nothing wrong with those three lines.
Please post the entire code.

Be sure to use code tags (the <> formatting button) when posting code.

[dkjdod]

deleted

[AbstractionAnon]

I get no errors when compiling with Visual Studio 2010.

[brandonator]

u may have forgot "using namespace std;" its happened to me and i've gotten a similar issue (think the same) once

[dkjdod]

Well, thanks. I have one other problem.

This is what approx is supposed to equal when I enter n as 6.
2.97604617604617560644
This is what I get:
2.97604617604617649462

There seems to be a precision problem, but I don't know if it is my compiler (or the compiler my teacher used) or something in the code I left out.

[seriphis]

It could be compiler, it could be processor floating point issues.

[TheIdeasMan]

Your result seems OK to 15 significant figures, which is about all you are going to get from a double.

Normally 15 s.f. is good enough for most things.

In terms of error in the code, are you sure you haven't missed the last term or something?

HTH