C program example

I want an example of c language

I want an example of c language for basic

Turbo c++

Why

Turbo c++

Can any one know to slove this

My dad have windows 7 x32 bits

Hi! Some one have used tinyxml2 in c++ for parse an file generated from nmap?

this is a sample output, i need to get the ip and the host name.. Tinyxml give me always null

Hi guys. the question is next: what if I allocate string on a stack like : std::string str = "hello", than send it to some function by pointer like _some_func(*str); in this function I store the string pointer in an array which is heap allocated. so the question is - original string will be permanently on my thread stack until disposing? how it manages if I got up on the stack can I rewrite the stack frame with my string? or it has implicite copy to heap?

No. This will most likely result in Undefined Behavior. As soon as the function in which you allocated str ends, the memory used by str will be reclaimed. So the pointer to str in the heap allocated array will be an invalid pointer.

thanks. so, in my case, if I catch the string by : std::cout » str; I should call heap allocation to send to function like _func(new std::string(str)); ?

I don't understand what you mean by catch the string using cout. And if you want the string to persist across function calls you must allocate it on the heap and not on the stack.

Did you try to remove parts of the file to figure out where it starts giving not null I would start with the comment (starts with <!-- and ends with -->), tinyxml may have problems with reading those

(Besides books) Do I need to read a standard, for example the C ++ standard if I want to learn C ++?

hello may i ask "Don't post compuler executanles, that is onviously a security risk" why is it risky?

No. Please don't. C++ standard is not meant to be read by beginners and definitely not meant to be read cover to cover by regular users. Once you have read the books in the recommended list, you would reach a level of proficiency where you can look up the standard for specific sections that you want more information on.

I don't usually do this, but please proof-read your messages for spelling 😅 It's a security risk because we don't know what is actually written in the executable, thus, it's untrusted code Even if you share the source code, there is no way to know for sure that the source code is the same as what's compiled in without doing more work than would've gone to compiling it by oneself Let alone the fact that you'd be running an exe file you got from some rando on the internet

It really sucks how unfriendly C++ is for beginners, specially for good documentation and even what you should be looking for But I suppose it's natural for it to have info so spread out

And I haven't found it on google

What will happen if I do erase a non-existent element in a container (i.e. std::vector)

Are you sure? Did you check cppreference?

It depends on what method you will use do do this. All the behavior for specific cases is documented on cppreference.com

Not in my Google list

It depends on what method you will use do do this. All the behavior for specific cases is documented on cppreference.com

std::vector::erase(b,e) or std::vector::erase(it)

https://en.cppreference.com/w/cpp/container/vector/erase You need iterators to remove elements using erase, how would you get them for nonexistent elements?

Return value Iterator following the last removed element. If pos refers to the last element, then the end() iterator is returned. If last==end() prior to removal, then the updated end() iterator is returned. If [first, last) is an empty range, then last is returned. Exceptions Does not throw unless an exception is thrown by the assignment operator of T.

Return value Iterator following the last removed element. If pos refers to the last element, then the end() iterator is returned. If last==end() prior to removal, then the updated end() iterator is returned. If [first, last) is an empty range, then last is returned. Exceptions Does not throw unless an exception is thrown by the assignment operator of T.

https://en.cppreference.com/w/cpp/container/vector/erase You need iterators to remove elements using erase, how would you get them for nonexistent elements?

Using vec.end() or using an erased it

Or using iterators from another container (mistakenly) Or invalidated iterators

Or using iterators from another container (mistakenly) Or invalidated iterators

Read the lines before "Parameters" section

Those are all Undefined Behavior. You must be stupid to do that on purpose

😅 Invalidated iterator can be erased one

Using vec.end() or using an erased it

Or from a relocated vector

Or using iterators from another container (mistakenly) Or invalidated iterators

Is there anywhere to see std lib classes codes?

github.com/Microsoft/STL

What About GCC(G++)

https://letmegooglethat.com/?q=libstdc%2B%2B+github

https://letmegooglethat.com/?q=libstdc%2B%2B+github

Why static memory allocation is faster than dynamic allocation

ig because static get allocated at compile time and dynamic at runtime dynamic have to check is the requested allocation doesn't overlap or pc have enough memory to do that? cmiiw