I am using MS Visual C++ 6.0 (Prof. ed.). I can compile the program in VC++
now!
(I use g++ previously juz for comparision, but no need cross platform dev..)
But I have one more question, after modifying the code:
: // proj2.cpp : Defines the entry point for the console application.
: //
:
: #include "stdafx.h"
: #include <iostream>
: #include <vector>
: #include <string>
: #include <cstdio>
:
: using namespace std;
:
: vector<string>* getTyphoon(){
: vector<string>* typhoonList = new vector<string>();
: typhoonList->push_back("A");
: return typhoonList;
: }
:
: int main(int argc, char* argv[]){
: vector<string> typhoonList = *getTyphoon();
:
: string A = typhoonList.at(0);
: cout << "A: " << A << endl;
:
: return 0; // suppose i don't want to delete the dynamic location yet
: }
VC++ still issue 5 warnings (I usually don't know what it means), any
problem with that?
: --------------------Configuration: proj5 - Win32 Debug--------------------
: Compiling...
: proj5.cpp
: D:\proj5\proj5.cpp(19) : warning C4786:
'std::reverse_iterator<std::basic_string<char,std: :char_traits<char>,std::al
locator<char> > const
*,std::basic_string<char,std::char_traits<char>,st d::allocator<char>[color=blue]
>,std::basic_string<char,std::char_traits<[/color]
: char>,std::allocator<char> > const
&,std::basic_string<char,std::char_traits<char>,st d::allocator<char> > const
*,int>' : identifier was truncated to '255' characters in the debug
information
: D:\proj5\proj5.cpp(19) : warning C4786:
'std::reverse_iterator<std::basic_string<char,std: :char_traits<char>,std::al
locator<char> >
*,std::basic_string<char,std::char_traits<char>,st d::allocator<char>[color=blue]
>,std::basic_string<char,std::char_traits<char>,[/color]
: std::allocator<char> >
&,std::basic_string<char,std::char_traits<char>,st d::allocator<char> >
*,int>' : identifier was truncated to '255' characters in the debug
information
: c:\program files\microsoft visual studio\vc98\include\vector(39) : warning
C4786:
'std::vector<std::basic_string<char,std::char_trai ts<char>,std::allocator<ch
ar>[color=blue]
>,std::allocator<std::basic_string<char,std::char_ traits<char>,std::allocato[/color]
r<char> > >
:[color=blue]
>::vector<std::basic_string<char,std::char_traits< char>,std::allocator<char>
>,std::allocator<std::basic_string<char,std::char_ traits<char>,std::allocato[/color]
r<char> > > >' : identifier was truncated to '255' characters in the debug
information
: c:\program files\microsoft visual studio\vc98\include\vector(52) : warning
C4786:
'std::vector<std::basic_string<char,std::char_trai ts<char>,std::allocator<ch
ar>[color=blue]
>,std::allocator<std::basic_string<char,std::char_ traits<char>,std::allocato[/color]
r<char> > >
:[color=blue]
>::vector<std::basic_string<char,std::char_traits< char>,std::allocator<char>
>,std::allocator<std::basic_string<char,std::char_ traits<char>,std::allocato[/color]
r<char> > > >' : identifier was truncated to '255' characters in the debug
information
: c:\program files\microsoft visual studio\vc98\include\vector(60) : warning
C4786:
'std::vector<std::basic_string<char,std::char_trai ts<char>,std::allocator<ch
ar>[color=blue]
>,std::allocator<std::basic_string<char,std::char_ traits<char>,std::allocato[/color]
r<char> > >
:[color=blue]
>::~vector<std::basic_string<char,std::char_traits <char>,std::allocator<char
>
>,std::allocator<std::basic_string<char,std::char_ traits<char>,std::allocato[/color]
r<char> > > >' : identifier was truncated to '255' characters in the debug
information
: Linking...
:
: proj5.exe - 0 error(s), 5 warning(s)
"Jack Klein" <jackklein@spamcop.net> wrote in message
news:4ahcvvc2d7ajhs7tdu7uh66omir04leqsh@4ax.com...[color=blue]
> On Sat, 3 Jan 2004 11:51:49 +0800, "Forecast" <forecast@csis.hku.hk>
> wrote in comp.lang.c++:
>[color=green]
> > I run the following code in UNIX compiled by g++ 3.3.2 successfully.
> >
> > : // proj2.cc: returns a dynamic vector and prints out at main~~
> > : //
> > : #include <iostream>
> > : #include <vector>
> > :
> > : using namespace std;
> > :
> > : vector<string>* getTyphoon()
> > : {
> > : vector<string>* typhoonList = new vector<string>();
> > : typhoonList->push_back("A");
> > : return typhoonList;
> > : }
> > :
> > : int main(int argc, char* argv[]){
> > : vector<string> typhoonList = *getTyphoon();
> > : string A = typhoonList.at(0);
> > : cout << "A: " << A << endl;
> > :
> > : return 0;
> > : }
> >
> >
> > But as I transfer the code to MS Visual C++, error appears.[/color]
>
> What version of Visual C++? What errors? Up until quite recently,
> Visual C++ remained way behind in ISO C++ standard conformance. GCC
> 3.3.x, on the other hand, probably has quite a bit better conformance
> than the version of Visual C++ you are using.
>[color=green]
> > What make me frustrated is that after certain modification, I compiled
> > "successfully" (with some warnings), but the program still hangs during
> > runtime (the WinXP error reporting dialogue is appeared).
> >
> > (1) Anyone kindly knows what's the problem? (Following is the code after
> > modification)
> >
> > : // proj2.cpp : Defines the entry point for the console application.
> > : //
> > : #include "stdafx.h"
> > : #include <iostream>
> > : #include <vector>[/color]
>
> You need to add either:
>
> #include <stdio.h>
>
> ...or:
>
> #include <cstdio>
>
> ...here.
>
> The C++ standard, unlike the C standard, allows ANY standard header to
> include ANY OTHER standard header, but does not guarantee that it will
> do so. If you want to use printf() in a C++ program, you should
> include this header in one of its two forms yourself.
>[color=green]
> > :
> > : using namespace std;
> > :
> > : vector<string>* getTyphoon(){
> > : vector<string>* typhoonList = new vector<string>();
> > : typhoonList->push_back("A");
> > : return typhoonList;
> > : }
> > :
> > : int main(int argc, char* argv[]){
> > : vector<string> typhoonList = *getTyphoon();
> > :
> > : string A = typhoonList.at(0);
> > : printf("%s\n", A);[/color]
>
> The %s conversion to printf() requires a C string argument, that is an
> array of characters including a terminating '\0' character. Not a C++
> std::string. printf() is a function inherited from C, and it does not
> deal with C++ std::strings at all.
>
> If you want to pass a C++ std::string to any C library function that
> expects a C string, you need to use the c_str member function:
>
> printf("%s\n", A.c_str());
>[color=green]
> > :
> > : return 0;
> > : }
> >
> >
> > (2) I tried to compile the second code in UNIX again... (that's using[/color][/color]
the[color=blue][color=green]
> > "printf" and removal of #include "stdafx.h"), the following error is[/color][/color]
out,[color=blue][color=green]
> > what does it mean?
> >
> > : user@honest user> g++ test.cc -o test
> > : test.cc: In function `int main(int, char**)':
> > : test.cc:26: warning: cannot pass objects of non-POD type `struct
> > std::string'
> > : through `...'; call will abort at runtime
> > : user@honest user>
> >
> >
> > It would be glad if anyone can help me solve the problem...[/color]
>
> If you must build code to work with two different compilers, you need
> to make sure that they do not have vastly different levels of C++
> standard conformance, or you will continue to have these kind of
> problems.
>
> --
> Jack Klein
> Home:
http://JK-Technology.Com
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>
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