a |= b; is just syntactic sugar for a = a | b;. Same syntax is valid for almost every operator in C++. But int i |= 5; is an error, because in the definition line you must have an initialisation, that is an expression that does not use the variable being declared. is valid and will give value … Read more
cin is not a statement, it’s a variable that refers to the standard input stream. So the closest match in C is actually stdin. If you have a C++ statement like: a similar thing in C would be the use of any of a wide variety of input functions: See an earlier answer I gave to a question today … Read more
See this question for some discussion. They recommend the articles: Exploring the C++ Unit Testing Framework Jungle, By Noel Llopis. And the more recent: C++ Test Unit Frameworks I have not found an article that compares googletest to the other frameworks yet.
Try g++ is the C++ compiler frontend to GCC.gcc is the C compiler frontend to GCC. Yes, Xcode is definitely an option. It is a GUI IDE that is built on-top of GCC. Though I prefer a slightly more verbose approach:
Your header file with class student_Example doesn’t promise a constructor. (And seems to be missing and #endif) While we are there we can use an member initialiser list in the constructor Edit: Note that student_Example(char nam, int marc1, int marc2) is a declaration that you will define a constructor taking a char and two ints., … Read more
how to put NULL or empty value to an integer array? here i want every book data type to have there det arrays have value zero for every det[] member
Use <iomanip>‘s std::hex. If you print, just send it to std::cout, if not, then use std::stringstream You can prepend the first << with << “0x” or whatever you like if you wish. Other manips of interest are std::oct (octal) and std::dec (back to decimal). One problem you may encounter is the fact that this produces … Read more
C++ inherits its syntax from C, and tries hard to maintain backward compatibility where the syntax matches. So passing arrays works just like C: the length information is lost. However, C++ does provide a way to automatically pass the length information, using a reference (no backward compatibility concerns, C has no references): Demonstration: http://ideone.com/MrYKz Here’s … Read more
You are out of luck here. The best way is to define your own assert macro. Basically, it can look like this: This will define the ASSERT macro only if the no-debug macro NDEBUG isn’t defined. Then you’d use it like this: Which is a bit simpler than your usage since you don’t need to … Read more
If you are using c++ then you shouldn’t reinvent the wheel, just use vectors: Edit: I didn’t understand your question, if you just want to have and array of arrays allocated on the heap just use: