I’m learning C++ with Code::Blocks, and everytime i try to create a new class, I get an error message saying: Here’s the code I’ve been using: Main Class Lime Class (.ccp): Lime Header (.h): If someone knows, how to fix it, please, tell me!
stepi is more detailed than nexti. if you call sum() from main() function then doing stepi reaches you inside the sum() function, but nexti doesn’t. Below is the screenshot when you call stepi when you were at call of sum() instruction (i.e., => 0x08048403 <+40>: call 0x8048419 <sum>). The stepi instuction routes you inside the … Read more
You can not initialize tst_ where you declare it. This can only be done for static const primitive types. Instead you will need to have a constructor for class test1. EDIT: below, you will see a working example I did in ideone.com. Note a few changes I did. First, it is better to have the … Read more
You cannot store arrays in a vector or any other container. The type of the elements to be stored in a container (called the container’s value type) must be both copy constructible and assignable. Arrays are neither. You can, however, use an array class template, like the one provided by Boost, TR1, and C++0x: (You’ll … Read more
They are three separate errors: won’t work because end() returns a an iterator, and object is a pointer. Those are generally distinct types (A vector can use raw pointers as iterators, but not all implementations do it. Other containers require special iterator types). doesn’t work because you take the address of the returned iterator. That … Read more
Actually, when you have an array a[SIZE], you can always check: But it’s not necessary, unless you created a dynamic array (using operator new). See the other answers, I won’t delete it just because it’s accepted now. If other answer is accepted, I’ll delete this “answer”. EDIT (almost 4 years later 🙂 ) As I … Read more
The differences are combinations of: L vs V: whether you want to pass the parameters to the exec’ed program as L: individual parameters in the call (variable argument list): execl(), execle(), execlp(), and execlpe() V: as an array of char* execv(), execve(), execvp(), and execvpe() The array format is useful when the number of parameters … Read more
Your local variable mid is declared in the scope that is closer to the point of use, so it “shadows” the mid() function; the compiler thinks that you are trying to “call” an integer, which is invalid. Rename the local variable to fix this problem: Note: you could also use ::mid(lo, hi) instead of renaming … Read more
Your SortedContainerImpl class has two separate Container base classes. One is virtual (via the SortedContainer class) and the other is non-virtual (via the ContainerImpl class). SortedContainerImpl has concrete implementations of Container::get_size() and Container::get(int) for the base that comes in from ContainerImpl, but not for the virtual base that comes in via SortedContainer. One way to … Read more
You can use Scanner with System.in. E.g.