Pragmas are compiler-specific and often are concerned with the technical details about the code sections in the object files. There are a couple of Visual C++ pragmas that are useful in debugging code.
In general, you will want your code to compile with as few warnings as possible. The default warning for the Visual C++ compiler is /W1, which means that only the most severe warnings are listed. Increasing the value to 2, 3, or the highest value of 4 progressively increases the number of warnings that are given during a compilation. Using /Wall will give level-4 warnings and warnings that have been disabled by default. This last option, even for the simplest code, will produce a screen full of warnings. When you have hundreds ...
