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Hello,

Thanks for your help. I'm not sure what you mean by one of my source files having "a date that's in the future"? I am not making any changes to any of the code. I just click on the green...

Hello,

I am running Visual Studio 10 project, and I have some code that compiles fine. I have just recently included a third-party library with a header file. Now, every time I run my project,...

Hello,

I want to store a very small number - too small for even a long double. However, I don't need the number to be stored very precisely - in fact, all I really need is the order of magnitude...

Hello,

Suppose I have a stl vector of ints, and I want to pass a sub-range of that vector as an argument to a function. One way of doing that would be to copy the sub-range, and then pass that...

Hello,

Suppose I have a two-dimensional stl vector (a vector of vectors), for example:



vector<vector<int> > x;


And then I want to sort the outer vectors in order of the size of their...

Yes, getc() is converted to an int automatically, but I want to be able to stream three bytes, and concatenate them into a single integar. In this way, the first byte in the integar is zeros, and the...

Hello,

I have a FILE stream, and I want to create a function that streams a specified number of bytes (up to four bytes) and returns the value of this, as an integar.

For example, supposing...

Thanks Paul - using the "rb" argument worked!

Hello,

I am encoding some information in a binary file, and I want to check what I am doing by printing out all the bytes that represent the file.

This is being done by opening a pointer to the...

Hi,

Thanks for your help. However, I have tried using ios::ate instead of ios::app, and the output I got was "4, 7, 6, 6, 6, 6". So it seems that when I seekp, it is seeking relative to the out2...

Hello,

I am trying to stream data to a file, and then return to the file to add further data. When I add data the second time, I then want to update the value of the second byte in the whole file....

Hello,

Typically, I create one header file per class. As such, the basic structure of most of my header files is as follows:



#ifndef MYCLASS_H
#define MYCLASS_H

class MyClass

Hello,

I'm trying to write some C++ code in Windows to read the GPS EXIF data from a JPEG image. The only C++ example I have found (http://www.codeproject.com/Articles/3803/Cexif) reads many of...

Hello,

In my Visual Studio project directory, I have created two folders, "Source" and "Include", which contain the source and header files. How can I add a source or header file to my project,...

Hi,

The reason I'm using a mixture of vectors and dynamically-allocated arrays is because my dynamically-allocated arrays are very large, and require a very fast access time. The vectors are short...

Hi,

Thanks for the help. My program does not actually rely on the number of times the constructor is called, I just wrote that code to illustrate the idea.

The issue I was having that brought...

Hello,

I've come across a discrepancy between running the following code under Linux and Windows. I have a vector of MyClass objects, which I resize to a length of 5. The number of MyClass objects...

Hello,

I am trying to create a button using the Windows API (not using Windows Forms), using OpenGL in 2D mode to draw the button. So far, what I have done is to monitor every time the mouse is...

Here is my class:


class MyWindow
{
public:
// Attributes
int num_squares;

// Functions

Thanks for your help. This would mean that I would have to create my class from scratch again, which means resetting all variables to their original values in the constructor. All the variable values...

I'm sorry, I don't understand your solution....

Basically I'm confused because WndProc() is static, and so this means that it cannot access any non-static variables or non-static functions in a...

Hello,

I am just starting out trying to write a Windows application using the Windows API, but I am having problems understanding the WndProc() function. I know that WndProc() is called whenever...

Hello,

I have a class with a vector as a static member:


class MyClass
{
static std::vector<int> my_vector;
}

Hello,

I have a vector, vector1, of MyClass objects. I then have another vector, vector2, of pointers to these objects. I then want to add a third vector, vector3, to the end of vector1. I do this...

Ok thanks, I understand that now. However, I'm now confused why my attempt with the static array worked. If I used "float x[3]" instead of "float* x = new float[3]", with "out.write((char*)x,...