creating dynamic array of string c++
You meant to type: And you also need to delete[] collection (or you’ll leak this memory). It would be better use std::vector<std::string> collection; and avoid the raw pointer usage altogether:
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What is the job of autogen.sh when building a c++ package on Linux
The steps: The autogen.sh script generates the configure script (from configure.ac, using autoconf) and any files it needs (like creating Makefile.in from Makefile.am using automake). This requires autotools to be installed on your system, and it must be run when checking out the project from source control (if configure isn’t checked in). People who download source tarballs can usually skip this step, because output of this … Read more
In C++ what does template<> mean?
It’s a specialization. template<> means that the specialization itself is not templated- i.e., it is an explicit specialization, not a partial specialization.
What is the source of the data for the ProgramFiles, ProgramW6432Dir, ProgramFilesDir (x86), CommonProgramFiles environment variables?
On a 64-bit Windows system, the reading of the various environment variables and some Windows Registry keys is redirected to different sources, depending whether the process doing the reading is 64-bit or 32-bit. The table below lists these data sources: So for example, for a 32-bit process, the source of the data for the %ProgramFiles% and %ProgramFiles(x86)% environment variables is the … Read more
Understanding Recursion to generate permutations
PaulR has the right suggestion. You have to run through the code by “hand” (using whatever tools you want – debuggers, paper, logging function calls and variables at certain points) until you understand it. For an explanation of the code I’ll refer you to quasiverse’s excellent answer. Perhaps this visualization of the call graph with … Read more
Fixing Segmentation faults in C++
Compile your application with -g, then you’ll have debug symbols in the binary file. Use gdb to open the gdb console. Use file and pass it your application’s binary file in the console. Use run and pass in any arguments your application needs to start. Do something to cause a Segmentation Fault. Type bt in the gdb console to get a stack trace of the Segmentation Fault.
Passing as const and by reference – Worth it?
Possible Duplicate:How to pass objects to functions in C++? In my game I make excessive use of mathematical vectors and operator overloading of them. That’s basically all about my Vector class (methods excluded). I am not an expert in C++ and I’ve seen and read about passing as const and passing by reference. So, where … Read more
Serial Port (RS -232) Connection in C++
Please take a look here: RS-232 for Linux and Windows 1) Windows Serial Port Programming 2) Using the Serial Ports in Visual C++ 3) Serial Communication in Windows 1) You can use this with Windows (incl. MinGW) as well as Linux. Alternative you can only use the code as an example. 2) Step-by-step tutorial how … Read more
Right Justifying output stream in C++
You need to use std::setw in conjunction with std::right.
C++ Void Function with File Stream Error
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