Struct Constructor in C++?
Can a struct have a constructor in C++? I have been trying to solve this problem but I am not getting the syntax.
c++
Making my own toString() method on c++ struct
I’m used to oveerriding the Java toString() method on my own objects in classes, but I’m not sure where I’m going wrong with the following code: I’m only beginning to learn c++ so any advice would be appreciated
Floating Point Exception C++ Why and what is it?
A “floating point number” is how computers usually represent numbers that are not integers — basically, a number with a decimal point. In C++ you declare them with float instead of int. A floating point exception is an error that occurs when you try to do something impossible with a floating point number, such as … Read more
Is there any built-in factorial function in c++?
I have searched but I was not able to find this. Would anyone please tell me that if there is any built-in factorial function in c++ ?
“std::bad_alloc”: am I using too much memory?
My problem turned out to be that this->meshPoints.getNormalForVertex(i) accesses an array (or vector, I can’t remember) whose length is less than this->meshPoints.getNumFaces() * 3. So it was accessing out of bounds.
Mutex example / tutorial? [closed]
Here goes my humble attempt to explain the concept to newbies around the world: (a color coded version on my blog too) A lot of people run to a lone phone booth (they don’t have mobile phones) to talk to their loved ones. The first person to catch the door-handle of the booth, is the … Read more
Unresolved external symbol in object files
This error often means that some function has a declaration, but not a definition. Example: In your case, the definition cannot be found. The issue could be that you are including a header file, which brings in some function declarations, but you either: do not define the functions in your cpp file (if you wrote … Read more
How do sizeof(arr) / sizeof(arr[0]) work?
If you have an array then sizeof(array) returns the number of bytes the array occupies. Since each element can take more than 1 byte of space, you have to divide the result with the size of one element (sizeof(array[0])). This gives you number of elements in the array. Example: LIVE EXAMPLE Note that if you … Read more
C++ equivalent of Java’s toString?
In C++ you can overload operator<< for ostream and your custom class: This way you can output instances of your class on streams: In case your operator<< wants to print out internals of class A and really needs access to its private and protected members you could also declare it as a friend function:
What is the ‘override’ keyword in C++ used for? [duplicate]
The override keyword serves two purposes: It shows the reader of the code that “this is a virtual method, that is overriding a virtual method of the base class.” The compiler also knows that it’s an override, so it can “check” that you are not altering/adding new methods that you think are overrides. To explain … Read more