I am trying to display an image based on a string of hex pixel data. The string object being transmitted to me is similar to the following: std::string image_b
I am wondering if/ what include guards on files like windows.h, math.h, iostream, stdio... etc. Since I have those headers included multiple times in different
Consider the following auto a = 10; When does the compiler know that a is an int, at compile time or at run-time? If it deduces the type at run-time, will it n
I was converting my projects from VS2010 to VS2012.But I am getting an _MSC_VER linker error in certain projects. After a long surfing through google I found ou
Im trying to boot my OS to qemu with this code: qemu-system-i386 -kernel MyOS/mykernel.elf But I keep getting this error: qemu-system-i386: Error loading uncom
Please help my code is as follows. I have found out the Fibonacci series within a range successfully but I am finding it difficult to extract the prime numbers
Background For a long time, gcc has been providing a number of builtin bit-twiddling functions, in particular the number of trailing and leading 0-bits (also f
I'm using an example to show what I mean: On my Mac, to leave the first "while loop", the user has to type "CTRL+D". From what I understand, that is achieved by
Can I query an ostream object about whether or not it has been written to? For an ostringstream, one could use if(!myOssObject.str().empty()) What about the
I try to execute the next code, But If I use a file Image the code run well but If I tried to use a QImage I get the next error. In the same way I get the error
I'm playing around with abstracting Windows, Linux, and Mac File IO calls into macros (to avoid C runtime, so no fopen, fclose, etc...). I've actually got quit
Suppose I have 2 header files, 1 .ipp extension file and a main.cpp file: First header file myClass1.h (like interface in Java): template<class T> class m
I want to make a game using SDL2, but I'm unable to compile and/or run my code, please help! SDL2 is notoriously hard to set up, and it's often the first libr
I'm new to c++ and I have question. I have code like: void FlowState::closeFile() { if (outfile) { //from here struct timeval times[2];
For my project I'm trying to create a free function for a complex number class. It is defined in the cpp file. The function is an overloaded input streaming ope
I need to attain the slope of a linear regression similar to the way the Excel function in the below link is implemented: http://office.microsoft.com/en-gb/ex
Under mac os x I have office 2011 and its excel and VBA, and I have gcc-5.3.0's g++. I played a lot to passing arrays (of numerical built-in types) from VBA to
Namespaces are in many was like classes with no constructors, no destructors, no inheritance, final, and only static methods and members. After all, this kind o
I have a class containing an enum class. class Shader { public: enum class Type { Vertex = GL_VERTEX_SHADER, Geometry = GL_GEOMETRY_SHADE
Is it possible to change the default Working directory in Qt Creator to specified path? Or is it possible to set Working directory in .pro file? PS: I know ab