By my knowledge there is no overall way to do this. If you look at the headers of cross platform/multiple compiler supporting libraries you’ll always find a lot of defines that use compiler specific constructs to determine such things: You probably will have to do such defines yourself for all compilers you use.
By my knowledge there is no overall way to do this. If you look at the headers of cross platform/multiple compiler supporting libraries you’ll always find a lot of defines that use compiler specific constructs to determine such things: You probably will have to do such defines yourself for all compilers you use.
The initialization of the static member counter must not be in the header file. Change the line in the header file to And add the following line to your employee.cpp: Reason is that putting such an initialization in the header file would duplicate the initialization code in every place where the header is included.
Enums are classes and should follow the conventions for classes. Instances of an enum are constants and should follow the conventions for constants. So There is no reason for writing FruitEnum any more than FruitClass. You are just wasting four (or five) characters that add no information. This approach is recommended by and used in … Read more
Yes, it does. The grammar is described in detail throughout the standard and is summarized in Appendix A: Grammar Summary (it’s Appendix A in both the C++03 standard and the C++0x final committee draft). You can purchase the C++03 standard or you can download the C++0x FCD (it’s document n3092 on that page). To answer … Read more
Does std::stoi throw an error on the input “abcxyz”? Yes. I think your confusion may come from the fact that strtol never reports an error except on overflow. It can report that no conversion was performed, but this is never referred to as an error condition in the C standard. strtol is defined similarly by all three C standards, and I will spare … Read more
Does std::stoi throw an error on the input “abcxyz”? Yes. I think your confusion may come from the fact that strtol never reports an error except on overflow. It can report that no conversion was performed, but this is never referred to as an error condition in the C standard. strtol is defined similarly by all three C standards, and I will spare … Read more
Guesswork (even educated guesswork) is fun but you really need to go to the standards documents to be sure. For example, ISO C11 states (my emphasis): If the value of argc is greater than zero, the string pointed to by argv[0] represents the program name; argv[0][0] shall be the null character if the program name is not available from the host environment. … Read more
There’s no guarantee in the POSIX standard that sizeof(int) >= sizeof(ssize_t), nor the other way around. Typically ssize_t is larger than int, but the safe and portable option in C99 is to use intmax_t instead for the argument and the return value. The only guarantees you have wrt. the relationship between int and ssize_t are: int can store values of at least the range [-2^15 … … Read more
The main function must be declared as a non-member function in the global namespace. This means that it cannot be a static or non-static member function of a class, nor can it be placed in a namespace (even the unnamed namespace). The name main is not reserved in C++ except as a function in the … Read more