You have to specify the default values for the arguments only in the declaration but not in the definition. The default value for an member function’s argument can either go in declaration or definition but not both. Quote from ISO/IEC 14882:2003(E) 8.3.6 6) Except for member functions of class templates, the default arguments in a … Read more
I was studying the 8 queens puzzle and i wrote down my version of code that solved the problem with the first queen always put on row 0. Now i want to modify it so it will take user input so it can start from rows 0-7. I’ve put something like this in the main … Read more
As @Pete Becker points out in the comments, you need to qualify the name string as std::string: The compiler just doesn’t know what you’re talking about, and it’s the equivalent of just writing: The compiler just doesn’t know what type that is unless you’ve declared, hence the error missing type specifier – int assumed You should read up … Read more
Copy a file in a sane way: This is so simple and intuitive to read it is worth the extra cost. If we were doing it a lot, better to fall back on OS calls to the file system. I am sure boost has a copy file method in its filesystem class. There is a C method … Read more
The issue is that you’re declaring a local grades array with a size of 1, hiding the global grades array. Not only that, you are now accessing the array beyond the bounds, since the local grades array can only hold 1 item. So get rid of the line: However, it needs to be mentioned that this: is not valid C++ syntax. … Read more
he typical way to check for existence in many STL containers such as std::map, std::set, … is:
The up vector is basically a vector defining your world’s “upwards” direction. In almost all normal cases, this will be the vector (0, 1, 0) i.e. towards positive Y. eye is the position of the camera’s viewpoint, and center is where you are looking at (a position). If you want to use a direction vector D instead of a center position, you can simply use eye … Read more
The best thing to do is to use the algorithm remove_if and isspace: Now the algorithm itself can’t change the container(only modify the values), so it actually shuffles the values around and returns a pointer to where the end now should be. So we have to call string::erase to actually modify the length of the container: We … Read more
Very frustrating that nobody actually shows a concrete solution. I had this issue after installing OpenCV. For me the easiest solution to remove this warning was actually to disable this driver:
Here’s a helper class that accomplish what you want: It’s used simply by calling centered(“String”), like so: