calculator program from Bjarne Stroustrup's book

[deduct]

here is the special edition, page 115, line 23rd:

while(cin.get(ch)&&isalnum(ch)) string_value.push_back(ch);

I copied the program from his book, but when I tried to compile, the error messages came out:

E:\calculator.cpp(55) : error C2039: 'push_back' : is not a member of 'basic_string<char,struct std::char_traits<char>,class std::allocator<char> >'

Should I include a header file or write the function push_back by myself? Thank you very much.

[Davros]

Sounds like push_back is not implemented in your library. However, push_back is equivelent to the += operator, so you could use that.

Funny coincidence - I'm writing an RPN calculator myself right now.

[Luigi]

Here is the full code of the calculator..
(I learned c++ with that same book too)
It worked fine for me..

U might want to rename it dc for argc to work..

[deduct]

Thanks Luigi and Davros, it really helps me alot.

I downloaded Luigi's source code, it doesn't work on my computer
(Visual C++ 6.0, windows Xp), with the same wrong message:

c:\documents and settings\cindy\Desktop\calc.cpp(186) : error C2039: 'push_back' : is not a member of 'basic_string<char,struct std::char_traits<char>,class std::allocator<char> >'

Davros's advice does work.

good for the coming way

[Flux]

Luigi! Dude you use a Mac too? Here I thought I was the only one. I use Proj. Builder too, but it seems to be different then visual C++ in terms of basic commands. Whem I compile my code, everything is ok except one vital thing... It doesn't recognize main(). U know if i'm supposed to do anything different as opposed to its microsoft counterpart?