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  • Problem with include guard

    - by isurulucky
    When I add an include guard to my header file for a Visual C++ project, it gives me the following warning and error: warning C4603: '_MAPTEST_H' : macro is not defined or definition is different after precompiled header use Add macro to precompiled header instead of defining here .\MapTest.cpp(6) : use of precompiled header** // the precompiled header stdafx.h is included in this line .\MapTest.cpp(186) : fatal error C1020: unexpected #endif but when I add the precompiled header before the include guard, no warning or error is emitted. What is the reason for this?

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  • conflicting declaration when filling a static std::map class member variable

    - by Max
    I have a class with a static std::map member variable that maps chars to a custom type Terrain. I'm attempting to fill this map in the class's implementation file, but I get several errors. Here's my header file: #ifndef LEVEL_HPP #define LEVEL_HPP #include <bitset> #include <list> #include <map> #include <string> #include <vector> #include "libtcod.hpp" namespace yarl { namespace level { class Terrain { // Member Variables private: std::bitset<5> flags; // Member Functions public: explicit Terrain(const std::string& flg) : flags(flg) {} (...) }; class Level { private: static std::map<char, Terrain> terrainTypes; (...) }; } } #endif and here's my implementation file: #include <bitset> #include <list> #include <map> #include <string> #include <vector> #include "Level.hpp" #include "libtcod.hpp" using namespace std; namespace yarl { namespace level { /* fill Level::terrainTypes */ map<char,Terrain> Level::terrainTypes['.'] = Terrain("00001"); // clear map<char,Terrain> Level::terrainTypes[','] = Terrain("00001"); // clear map<char,Terrain> Level::terrainTypes['\''] = Terrain("00001"); // clear map<char,Terrain> Level::terrainTypes['`'] = Terrain("00001"); // clear map<char,Terrain> Level::terrainTypes[178] = Terrain("11111"); // wall (...) } } I'm using g++, and the errors I get are src/Level.cpp:15: error: conflicting declaration ‘std::map, std::allocator yarl::level::Level::terrainTypes [46]’ src/Level.hpp:104: error: ‘yarl::level::Level::terrainTypes’ has a previous declaration as ‘std::map, std::allocator yarl::level::Level::terrainTypes’ src/Level.cpp:15: error: declaration of ‘std::map, std::allocator yarl::level::Level::terrainTypes’ outside of class is not definition src/Level.cpp:15: error: conversion from ‘yarl::level::Terrain’ to non-scalar type ‘std::map, std::allocator ’ requested src/Level.cpp:15: error: ‘yarl::level::Level::terrainTypes’ cannot be initialized by a non-constant expression when being declared I get a set of these for each map assignment line in the implementation file. Anyone see what I'm doing wrong? Thanks for your help.

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  • how to get path froma variable

    - by yoshco
    following http://stackoverflow.com/questions/659647/how-to-get-folder-path-from-file-path-with-cmd i want to strip the path (without the filename) from a variable. following the logic of the methods discussed above i would like to use batch bellow, which doesnt work. any takers? possible? set cpp="C:\temp\lib.dll" echo %cpp% "C:\temp\lib.dll" echo %~dpcpp "C:\temp\" > doesn't work

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  • How can I make this Perl regex work?

    - by Geo
    I have this line ( it's a single line, SO makes it seem like 2 ): /Od /D "WIN32" /D "_DEBUG" /FD /EHa /MDd /Fo"Debug" /Fd"Debug\vc80.pdb" /W3 /c /Zi /clr /TP .\main.cpp" And I want to extract the .\main.cpp. I thought the following would do the trick: if($string =~ /.*\s+(.*)$/i) { print "matched ",$1,"\n"; } because this same regex works in Ruby, and extracts the string I required. How can I get it working?

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  • templates and casting operators

    - by Jonathan Swinney
    This code compiles in CodeGear 2009 and Visual Studio 2010 but not gcc. Why? class Foo { public: operator int() const; template <typename T> T get() const { return this->operator T(); } }; Foo::operator int() const { return 5; } The error message is: test.cpp: In member function `T Foo::get() const': test.cpp:6: error: 'const class Foo' has no member named 'operator T'

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  • Blank source file. How can I decompile the .exe? [closed]

    - by Jiexi
    Right after I finished my project for my Computer Science class, I hit save and the computer froze. When i came back, the cpp file wouldn't open through visual studio, I have the exe and object files. Please tell me I can get my source code back :( EDIT: the .cpp file is blank, and i wasn't prompted for recovery when starting visual studio again. I already checked /documents/visualstudio/backup, nothing is there.

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  • xerces-c: Xml parsing multiple files

    - by user459811
    I'm atempting to learn xerces-c and was following this tutorial online. http://www.yolinux.com/TUTORIALS/XML-Xerces-C.html I was able to get the tutorial to compile and run through a memory checker (valgrind) with no problems however when I made alterations to the program slightly, the memory checker returned some potential leak bytes. I only added a few extra lines to main to allow the program to read two files instead of one. int main() { string configFile="sample.xml"; // stat file. Get ambigious segfault otherwise. GetConfig appConfig; appConfig.readConfigFile(configFile); cout << "Application option A=" << appConfig.getOptionA() << endl; cout << "Application option B=" << appConfig.getOptionB() << endl; // Added code configFile = "sample1.xml"; appConfig.readConfigFile(configFile); cout << "Application option A=" << appConfig.getOptionA() << endl; cout << "Application option B=" << appConfig.getOptionB() << endl; return 0; } I was wondering why is it when I added the extra lines of code to read in another xml file, it would result in the following output? ==776== Using Valgrind-3.6.0 and LibVEX; rerun with -h for copyright info ==776== Command: ./a.out ==776== Application option A=10 Application option B=24 Application option A=30 Application option B=40 ==776== ==776== HEAP SUMMARY: ==776== in use at exit: 6 bytes in 2 blocks ==776== total heap usage: 4,031 allocs, 4,029 frees, 1,092,045 bytes allocated ==776== ==776== 3 bytes in 1 blocks are definitely lost in loss record 1 of 2 ==776== at 0x4C28B8C: operator new(unsigned long) (vg_replace_malloc.c:261) ==776== by 0x5225E9B: xercesc_3_1::MemoryManagerImpl::allocate(unsigned long) (MemoryManagerImpl.cpp:40) ==776== by 0x53006C8: xercesc_3_1::IconvGNULCPTranscoder::transcode(unsigned short const*, xercesc_3_1::MemoryManager*) (IconvGNUTransService.cpp:751) ==776== by 0x4038E7: GetConfig::readConfigFile(std::string&) (in /home/bonniehan/workspace/test/a.out) ==776== by 0x403B13: main (in /home/bonniehan/workspace/test/a.out) ==776== ==776== 3 bytes in 1 blocks are definitely lost in loss record 2 of 2 ==776== at 0x4C28B8C: operator new(unsigned long) (vg_replace_malloc.c:261) ==776== by 0x5225E9B: xercesc_3_1::MemoryManagerImpl::allocate(unsigned long) (MemoryManagerImpl.cpp:40) ==776== by 0x53006C8: xercesc_3_1::IconvGNULCPTranscoder::transcode(unsigned short const*, xercesc_3_1::MemoryManager*) (IconvGNUTransService.cpp:751) ==776== by 0x40393F: GetConfig::readConfigFile(std::string&) (in /home/bonniehan/workspace/test/a.out) ==776== by 0x403B13: main (in /home/bonniehan/workspace/test/a.out) ==776== ==776== LEAK SUMMARY: ==776== definitely lost: 6 bytes in 2 blocks ==776== indirectly lost: 0 bytes in 0 blocks ==776== possibly lost: 0 bytes in 0 blocks ==776== still reachable: 0 bytes in 0 blocks ==776== suppressed: 0 bytes in 0 blocks ==776== ==776== For counts of detected and suppressed errors, rerun with: -v ==776== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 2 from 2)

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  • What .gitignore I should use with QT projects? (QT Creator)

    - by Envek
    So, after little thinking I have wrote the following: # In repository we don't need to have: # Compiled object files *.o # Generated MOC, resource and UI files moc_*.cpp qrc_*.cpp ui_*.h # Built windows .exe and linux binaries # NOTE: PROJECT is a your project's name, analog of PROJECT.exe in Linux *.exe *.dll PROJECT # Windows-specific files Thumbs.db desktop.ini # Editors temporary files *~ # Debug and Release directories (created under Windows, not Linux) Debug/ Release/ Please ask, what needs to be added or fixed (especially for Windows - I haven't one under hand now. And Mac too [haven't work in it at all]). I want to keep my repository clear :-)

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  • Qt Creator draws up build issue: "target pattern contains no %. Stop."

    - by Louis93
    The compile output says no% in line 240 of the makefile. Here is an extract of that portion in the Makefile: debug/lv.simplon.class.o: c:/SimplonQt/include/lv.simplon.class.cpp $(CXX) -c $(CXXFLAGS) $(INCPATH) -o debug/lv.simplon.class.o c:/SimplonQt/include/lv.simplon.class.cpp I'm loading a project I have saved in my C drive in Windows, but I am not sure what exactly is the cause of the problem. Thanks in advance!

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  • Run time Debugging

    - by Prakash
    We have recently downloaded, installed and compiled gcc-3.0.4 code. gcc compiler has built successfully and we where able to compile some same test cpp file. I would like to know how we can modify gcc source code so that we add additional run time debugging statements like the binary in execution compiled by my gcc should print below statement in a log file: filename.cpp::FunctionName#linenumber-statement or any additional information that I can insert via this tailored compiler code Any references would be highly appreciable.

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  • GCC problem with raw double type comparisons

    - by Monomer
    I have the following bit of code, however when compiling it with GCC 4.4 with various optimization flags I get some unexpected results when its run. #include <iostream> int main() { const unsigned int cnt = 10; double lst[cnt] = { 0.0 }; const double v[4] = { 131.313, 737.373, 979.797, 731.137 }; for(unsigned int i = 0; i < cnt; ++i) { lst[i] = v[i % 4] * i; } for(unsigned int i = 0; i < cnt; ++i) { double d = v[i % 4] * i; if(lst[i] != d) { std::cout << "error @ : " << i << std::endl; return 1; } } return 0; } when compiled with: "g++ -pedantic -Wall -Werror -O1 -o test test.cpp" I get the following output: "error @ : 3" when compiled with: "g++ -pedantic -Wall -Werror -O2 -o test test.cpp" I get the following output: "error @ : 3" when compiled with: "g++ -pedantic -Wall -Werror -O3 -o test test.cpp" I get no errors when compiled with: "g++ -pedantic -Wall -Werror -o test test.cpp" I get no errors I do not believe this to be an issue related to rounding, or epsilon difference in the comparison. I've tried this with Intel v10 and MSVC 9.0 and they all seem to work as expected. I believe this should be nothing more than a bitwise compare. If I replace the if-statement with the following: if (static_cast<long long int>(lst[i]) != static_cast<long long int>(d)), and add "-Wno-long-long" I get no errors in any of the optimization modes when run. If I add std::cout << d << std::endl; before the "return 1", I get no errors in any of the optimization modes when run. Is this a bug in my code, or is there something wrong with GCC and the way it handles the double type?

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  • PKCS#7 Signed Code Image extracting

    - by sid
    Hi, I wanted to extract the Signer Informations from PKCS#7 Signed Code Image using C/CPP. I wanted to know the openssl API's. I am Able to extract Using bouncy castle (CMSSignedData). Please let me know the openssl API's which I can use in C/CPP to extract the each signers and signer informations and verify the Signers. is there any API like X509_LOOKUP_buffer() instead of X509_LOOKUP_file() ??? Thanks in advance opensid

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  • How to get path from a variable

    - by yoshco
    Following http://stackoverflow.com/questions/659647/how-to-get-folder-path-from-file-path-with-cmd I want to strip the path (without the filename) from a variable. following the logic of the methods discussed above I would like to use batch bellow, which doesn't work. any takers? possible? set cpp="C:\temp\lib.dll" echo %cpp% "C:\temp\lib.dll" echo %~dpcpp "C:\temp\" > doesn't work

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  • compiling maya (3d application ) with qt

    - by knishua
    including the maya ( 3d application ) classes in qt program gives lot of errors..... i have added all required include paths and libs...the same problem persists .... this is pro file for my qt project TARGET = FileCon TEMPLATE = app SOURCES += main.cpp \ dialog.cpp HEADERS += dialog.h \ ConvertFunction.h FORMS += dialog.ui LIBS += "C:/Program Files/Autodesk/Maya2008/lib" \ -lOpenMaya.lib \ -lFoundation.lib \ -lOpenMayalib INCLUDEPATH += "C:/Program Files/Autodesk/Maya2008/include" DEFINES = _BOOL \ WIN32 \ REQUIRE_IOSTREAM /////////////////////////////////////////// How is it possible to use maya classes with qt.

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  • Does it should be in a namespace?

    - by Knowing me knowing you
    Do I have to put code from .cpp in a namespace from corresponding .h or it's enough to just write using declaration? //file .h namespace a { /*interface*/ class my { }; } //file .cpp using a::my; // Can I just write in this file this declaration and // after that start to write implementation, or // should I write: namespace a //everything in a namespace now { //Implementation goes here } Thanks.

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  • Deriving a class from an abstract class (C++)

    - by cemregoksu
    I have an abstract class with a pure virtual function f() and i want to create a class inherited from that class, and also override function f(). I seperated the header file and the cpp file. I declared the function f(int) in the header file and the definition is in the cpp file. However, the compiler says the derived class is still abstract. How can i fix it?

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  • Makefile patsubs double replacement

    - by aaa
    hello. is a possible to do something like this, without shell command: CXX_MODULES += $(patsubst %, %/%.cpp, $(LIBRARIES)) notice double replacement which does not work (only first replacement happens) after some tinkering I came up with $(join $(LIBRARIES), $(patsubst %, /%.cpp, $(LIBRARIES))) Thank you

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  • undefined reference errors in C++

    - by Phenom
    I have files Record.h and Record.cpp. When I just include the Record.h file, I get several undefined reference errors to functions defined in those files. When I also include Record.cpp then the errors go away. Why is that? Record.h has the forward declarations for the functions it says are an undefined reference.

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  • Using the same variable across multiple files in C++

    - by Sam152
    In the process of changing some code, I have spilt some functions into multiple files. I have the files controls.cpp and display.cpp and I would like to be able to have access to the same set of variables in both files. I don't mind where they are initialized or declared, as long as the functions in both files can use them. This was not an issue when the functions were in the same file, but now it seems almost impossible after an hour of googling and trying various things.

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  • How do I get a array to just count how many numbers there are instead of counting the value of each number?

    - by Chad Loos
    //This is the output of the program *** start of 276 2D Arrays_03.cpp program *** Number Count Total 1 3 3 2 6 9 3 15 24 4 6 30 5 9 39 *** end of 276 2D Arrays_03.cpp program *** #include <iostream> #include <string> #include <iomanip> using namespace std; const int COLUMN_SIZE = 13; int main(void) { const int ROW_SIZE = 3; const int COUNT_SIZE = 5; void countValues(const int[][COLUMN_SIZE], const int, int[]); void display(const int [], const int); int numbers[ROW_SIZE][COLUMN_SIZE] = {{1, 3, 4, 5, 3, 2, 3, 5, 3, 4, 5, 3, 2}, {2, 1, 3, 4, 5, 3, 2, 3, 5, 3, 4, 5, 3}, {3, 4, 5, 3, 2, 1, 3, 4, 5, 3, 2, 3, 5}}; int counts[COUNT_SIZE] = {0}; string choice; cout << "*** start of 276 2D Arrays_03.cpp program ***" << endl; cout << endl; countValues(numbers, ROW_SIZE, counts); display(counts, COUNT_SIZE); cout << endl; cout << endl; cout << "*** end of 276 2D Arrays_03.cpp program ***" << endl << endl; cin.get(); return 0; } // end main() This is the function where I need to count each of the values. I know how to sum rows and cols, but I'm not quite sure of the code to just tally the values themselves. void countValues(const int numbers[][COLUMN_SIZE], const int ROW_SIZE, int counts[]) This is what I have so far. { for (int index = 0; index < ROW_SIZE; index++) counts[index]; {

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  • best alternative to in-definition initialization of static class members? (for SVN keywords)

    - by Jeff
    I'm storing expanded SVN keyword literals for .cpp files in 'static char const *const' class members and want to store the .h descriptions as similarly as possible. In short, I need to guarantee single instantiation of a static member (presumably in a .cpp file) to an auto-generated non-integer literal living in a potentially shared .h file. Unfortunately the language makes no attempt to resolve multiple instantiations resulting from assignments made outside class definitions and explicitly forbids non-integer inits inside class definitions. My best attempt (using static-wrapping internal classes) is not too dirty, but I'd really like to do better. Does anyone have a way to template the wrapper below or have an altogether superior approach? // Foo.h: class with .h/.cpp SVN info stored and logged statically class Foo { static Logger const verLog; struct hInfoWrap; public: static hInfoWrap const hInfo; static char const *const cInfo; }; // Would like to eliminate this per-class boilerplate. struct Foo::hInfoWrap { hInfoWrapper() : text("$Id$") { } char const *const text; }; ... // Foo.cpp: static inits called here Foo::hInfoWrap const Foo::hInfo; char const *const Foo::cInfo = "$Id$"; Logger const Foo::verLog(Foo::cInfo, Foo::hInfo.text); ... // Helper.h: output on construction, with no subsequent activity or stored fields class Logger { Logger(char const *info1, char const *info2) { cout << info0 << endl << info1 << endl; } }; Is there a way to get around the static linkage address issue for templating the hInfoWrap class on string literals? Extern char pointers assigned outside class definitions are linguistically valid but fail in essentially the same manner as direct member initializations. I get why the language shirks the whole resolution issue, but it'd be very convenient if an inverted extern member qualifier were provided, where the definition code was visible in class definitions to any caller but only actually invoked at the point of a single special declaration elsewhere. Anyway, I digress. What's the best solution for the language we've got, template or otherwise? Thanks!

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