dev-c++

问题 I'm just learning to program Windows Programs in C++ and use the Dev-C++ IDE. The first program I'm trying to compile is the following example from the MSDN site: #ifndef UNICODE #define UNICODE #endif #include <windows.h> LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam); int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE, PWSTR pCmdLine, int nCmdShow) { // Register the window class. const wchar_t CLASS_NAME[] = L"Sample Window Class"; WNDCLASS wc = { }; wc

问题 How to run any exe file from turbo c++? I know that I should stop using turbo c++ and move one to Dev or Code::Blocks, but my school doesn't agree so I gotta wing it. I just want to know how to run a file with or without the system() function. Any kind of advice is welcome Here's what I have tried so far: 1 #include<process.h> int main() { system("tnfsv13.exe"); //tnfsv being a 16-bit application(The need for slowness v 13) return 0; } 2 #include<process.h> int main() { system("tnfsv13.bat");

问题 I am sorry for this silly doubt. But when I compile this program, it only shows error line. It does not show error window. (I have purposely made an error here, I know the correct solution in code ). I tried view section in menu bar, but couldn't find the solution. Any settings help will be appreciated. 回答1: No need to be sorry.. it happens.. Right click the status bar Click on floating report window. A movable window will come up. Click on the inner tabbed close button. (You may have to

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 days ago . What I want to know is how I can create a c++ application using dev-c++ to connect to and let me query a database to get back information from the database. For this I would preferably like to stick to using an MS Access database as my program only needs basic functionality right

问题 I can't seem to find any thing on how to fix this and i have used Dev-Cpp befor but have never had this problem.I have tried re-installing Dev-Cpp and MinGW but nothing seems to work. i:\gw\lib\crt2.o(.text+0x8) In function `_mingw_CRTStartup' [Linker error] undefined reference to `__dyn_tls_init_callback' [Linker error] undefined reference to `__cpu_features_init' i:\gw\lib\crt2.o(.text+0x8) ld returned 1 exit status C:\workspace\cpp\Makefile.win [Build Error] [Project1.exe] Error 1 回答1:

问题 I am beginner to GLUT in C++. I am using Dev C++ as my IDE. I have this simple triangle drawing code and it produces an error "redeclaration of C++ built-in type short ". But When I put #include<iostream.h> before #include<glut.h> , it compiles and runs. Can anyone explain the logic behind that? #include<glut.h> void renderScene(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glBegin(GL_TRIANGLES); glVertex3f(-0.5,-0.5,0.0); glVertex3f(0.5,0.0,0.0); glVertex3f(0.0,0.5,0.0); glEnd(

问题 I'm trying to add an header file to dev-C++ but when I compile it it doesn't work. Here are my exact steps (for my example, I'm trying to get mysql.h to work): copy "mysql.h" into c:\dev-c++\includes check that in dev-C++ tools > compiler options > directories > c includes and c++ includes have the path to "c:\dev-c++\includes" include #include at the top of my file compiled This is what the dev-C++ compiler told me: 13 C:\Documents and Settings\Steve\Desktop\server code\setup1\main.c `mysql'

问题 Good day! I am using Dev-C++ as my IDE and the library OpenCV. I need to fetch the video taken by my IP camera and process it using the OpenCV. Can someone teach me how will I gonna do it. My OS is windows 7 64 bit. Thank you very much.. 回答1: if it's a recent opencv version, this might work: Mat frame; namedWindow("video", 1); VideoCapture cap("http://150.214.93.55/mjpg/video.mjpg"); while ( cap.isOpened() ) { cap >> frame; if(frame.empty()) break; imshow("video", frame); if(waitKey(30) >= 0)

问题 I am a teacher's assistant for a C programming class, and the instructor uses Dev C++ as the compiler for the class. Personally I would use a different one, but the choice is not mine here. Recently I installed the Windows 8 Professional 64 bit that is available on Dreamspark though my university, so I can start with some metro app development for some contests. Unfortunately, Dev C++ has stopped compiling. It previously worked fine with Windows 7 64 bit. I get an error when compiling that

问题 This question already has answers here : Floating point comparison [duplicate] (5 answers) Closed 6 years ago . Here x is taking 0.699999 instead of 0.7 but y is taking 0.5 as assigned. Can you tell me what is the exact reason for this behavior. #include<iostream> using namespace std; int main() { float x = 0.7; float y = 0.5; if (x < 0.7) { if (y < 0.5) cout<<"2 is right"<<endl; else cout<<"1 is right"<<endl; } else cout<<"0 is right"<<endl; cin.get(); return 0; } 回答1: There are lots of