Because in this case the default constructor would be called, am I correct?

Yes, if you use new or the array new without parameters, it calls the default constructor, assignment of a pointer (including nullptr) never calls the constructor by itself

then let's say I have this cin method istream & operator >> (istream& in, Bar& N) { in>>N.size; N.max = (N.size)*2; for (int i=0; i<N.size; i++) in>>N.fooArray[i]; //calling the Foo class istream method return in; } would there be problems?

because if it's already pointing to a nullptr, when will it point to a dynamic array with size and capacity??

Cool

Welcome

because if it's already pointing to a nullptr, when will it point to a dynamic array with size and capacity??

You need to call new[] here

You need to call new[] here

so I should delete the N.fooArray and make a new N.fooArray?

maybe not even necessary to delete it since it doesn't point to anything

You should

It might, so delete it first

You should

It seems like "N.arrayStrum = new Strumento [max];" throws an error in the compiler

It seems like "N.arrayStrum = new Strumento [max];" throws an error in the compiler

Show error then

expression in new-declarator must have integral or enumeration type

woops nvm I forgot to write N.max

Bla bla

I’m doing a program in C. I have created a graph in the format png. With Windows if you type ‘display image.png’ you can visualize the image, but if I’m using a Mac there’s a message that appears in the word ‘display’ that says ‘invalid command’.

Does anyone know which word should I use instead of display when I’m using a Mac. Thanks!

Does anyone know which word should I use instead of display when I’m using a Mac. Thanks!

Try quicklook or simply “open”

Bash command

Execute as a bash command

Try quicklook or simply “open”

Ok, thanks!

Hi

Just ask your question.

Solved the problem on my own...

Hi...I have been trying to use graphics.h in codeblocks but it does not work...i I have tried following some procedures from google but nothing works...i just get ".xe has stopped working". What might be the problem??

Thats the sample code

jpeg

and that is what i get after runnimg the code..

Can i compile c source code with c++ compiler?

yes

Can i compile c source code with c++ compiler?

"kind of vector one"??? Do you mean std library?

Not exactly, i mean a library that can save multiple data and has a easy and simplified management, like phyton does with “lists”

Better in what?

Array data administration

Not exactly, i mean a library that can save multiple data and has a easy and simplified management, like phyton does with “lists”

Oh sorry, the “vector” library i was referring is “vector.h” library

hi how can i jump from catch scope to try scope without nothing gets cleaned up in try codes ( from where it remains )

Can i compile c source code with c++ compiler?

Sure

Ho

What's the most advanced topic of c++?

Anyone going to answer my question?

What's the most advanced topic of c++?

May I just ask why you want to know that?

I'd say that at least one of the hardest is the name. It's C++, not c++.

What's the most advanced topic of c++?

Locale faucets

Nobody delves into it so it is the most advanced topic

Locale faucets

What is it?

What is it?

https://en.cppreference.com/w/cpp/locale/locale

Where's that

Kk got it

is there a way to read text from a specific line of a file?

I have a file with 2 lines and I need to read the second one, how can I do this?

Use object method

Or use heroine function if you are trying to read a sentence

Can i compile c source code with c++ compiler?

It is recommended to write portable codes; however it is possible to write a valid C program which is not valid in C++: struct operator { const char *name; }; int operator(const struct operator *, int, int); int main(void) { for (int try = 0; try < 10; ++try) operator(NULL, 0, try); return 0; }

Or use heroine function if you are trying to read a sentence

trying to read a list of numbers on the same line, what I'm trying to use is fscanf

also, the number of elements in the file is unknown, so I cannot really use fscanf

Not exactly, i mean a library that can save multiple data and has a easy and simplified management, like phyton does with “lists”

vector is easy enough

Oh sorry, the “vector” library i was referring is “vector.h” library

Dunno what it is

hi how can i jump from catch scope to try scope without nothing gets cleaned up in try codes ( from where it remains )

try block in while in try block

is there a way to read text from a specific line of a file?

No, file is not array, it doesnt know about amount of lines

Or use heroine function if you are trying to read a sentence

The hell?

No, file is not array, it doesnt know about amount of lines

alright so about the fscanf issue, how do I read stuff from the file and increase a counter for each time I find a new string?

Do you need whats inside the lines?

If not, read charwise or blockwise and count newlines

Does any 1 here have resources on how to get started in driver development for windows but in (modern) c++ instead of c?

Someone please give your helping hands

#howtoask

Someone please give your helping hands

^

^

I am a school student btw. I got this problem in my cybertronics Olympiad .

I was unable to solve this problem

I was unable to solve this problem

Give it a try, and come back later with what you've done so far

lol

lol noobs

lol noobs

including you

including you

Toxic.

Whew