Dima why

Hello am new hear

Here

Here

Yeah

Yeah

That's why

Yeah

You made a syntax error

🆗

🆗

Alongside semantic

Hello

How to read header files in c language plz

Like math.h stdio.h conio.h String.h signal.h and so on plz help

I know you all are genius ☺️

Like math.h stdio.h conio.h String.h signal.h and so on plz help

Could you define the problem more specifically? Do #include <math.h> directives work? Or you have some troubles with not found files? Judging by your need for conio.h you're on windows, reading some windows guides? What is your setup (IDE/Compiler)?

I want to read the header file

Or see inside the header file

Plz help

I want to read the header file

Ah, I see. You need to discover your include path, where the headers are installed on your system. On *nix it's usually /usr/include. I don't know the path on Windows though. You can open and read the include files there.

Thank ☺️☺️

Hello, anyone can tell me this code is correct? Or can I use print() in inherit class without writing virtual or override? is it now overriden or not? thnx class Base { public: virtual void print() = 0; }; class inhert : public Base { public: void print() {} };

yes, it is overriden

If we have to add floats to the program... We need to add #include[floats.h] command right?

Does anyone know how to create a keylogger

Hello, anyone can tell me this code is correct? Or can I use print() in inherit class without writing virtual or override? is it now overriden or not? thnx class Base { public: virtual void print() = 0; }; class inhert : public Base { public: void print() {} };

I would further suggest to add override (supported since C++11) which can help preventing bugs e.g. class Base { public: virtual void print() = 0; }; class inhert : public Base { public: void print() override {} };

I would further suggest to add override (supported since C++11) which can help preventing bugs e.g. class Base { public: virtual void print() = 0; }; class inhert : public Base { public: void print() override {} };

Thanks, If I dont write override, then Print() belongs to which class? and can you please explain what happens if I write virtual instead of override?

Hello, anyone can tell me this code is correct? Or can I use print() in inherit class without writing virtual or override? is it now overriden or not? thnx class Base { public: virtual void print() = 0; }; class inhert : public Base { public: void print() {} };

You can use override keyword to be sure if the member function overriden or not

Thanks, If I dont write override, then Print() belongs to which class? and can you please explain what happens if I write virtual instead of override?

you need virtual to be able to override the member function. override makes sure you actually do override it.

Hello, anyone can tell me this code is correct? Or can I use print() in inherit class without writing virtual or override? is it now overriden or not? thnx class Base { public: virtual void print() = 0; }; class inhert : public Base { public: void print() {} };

class inhert : public Base { public: void print() override {} }; It'd be a compile-time error if the member function is not overriden

Thank you guys

#include <stdio.h> int main(void) { int a = 010; printf("%d",a); return 0; } how this prints 8 ?

#include <stdio.h> int main(void) { int a = 010; printf("%d",a); return 0; } how this prints 8 ?

010 is 8. remove leading zero. leading zero means 8-based system

010 is 8. remove leading zero. leading zero means 8-based system

but in binary 010 is 2 right ?

yes

but in binary 010 is 2 right ?

Yea

010 is 8. remove leading zero. leading zero means 8-based system

oh so if there is leading zero always 8-based number systemis used ?

yes

yes

oh someone said to me it would be 2 or 10 depending on the compiler

https://en.cppreference.com/w/cpp/language/integer_literal

https://en.cppreference.com/w/cpp/language/integer_literal

this is also like this for C ?

no

no

https://www.tutorialspoint.com/cprogramming/c_constants.htm so it is like this in c also if 0 is followed by digits its taken as octal

thanks i got it if starting number is 0 followed by trailing numbers(digits), it will be converted to octal

why should we initiate *c?

in the function getLargestRadius?

in the function getLargestRadius?

we can do that in the line above as well, and then the check will be if (c != nullptr), but this form with initialization in an if statement is sometimes better because you reduce the scope of the variable and can't accidentally access it later. So it's more safe in general, but in this case there's no difference

or you are asking about something different?

thank you

or you are asking about something different?

I understand now

I have started learning the C/C++ language, please provide as much information as possible. Thank you.

I have started learning the C/C++ language, please provide as much information as possible. Thank you.

C and C++ are two different languages

Where is my mistake?

Where is my mistake?

I get a linker error

And this is my main.cpp #include "stack.hpp" int main() { Stack<int> entity; entity.push(20); }

You shouldn't split template declaration and definition into header and source files

Everything has to be written in header files

You shouldn't split template declaration and definition into header and source files

So i got it, but why just 2 functions of Stack class couldn't be linked. Why other functions are linked successfully

So i got it, but why just 2 functions of Stack class couldn't be linked. Why other functions are linked successfully

pop function and print function are linked successfully

Because you call only two functions

Because you call only two functions

You're right okay, my mistake

Just move all the code into header files and that's it

Just move all the code into header files and that's it

Okay got it👍🏻

https://pastebin.com/MT37XnMZ Is it possible to make it more efficient??I'm new to coding..

C and C++ are two different languages

Sorry sir, I just want to learn c language.

Sorry sir, I just want to learn c language.

Why?

Why?

Learn programming

Ok

guys what is the diffrence between using new and malloc ?

guys what is the diffrence between using new and malloc ?

malloc gives you some amount of allocated memory, new gives you a dynamically allocated object (allocates memory + calls the constructor). Basically malloc of a correct amount of memory + "placement new" in this memory will achieve the same result as new. But new is not guaranteed to be implemented this way by the standard so in the described situation this memory should be still destructed by calling the destructor on the memory and then free. What I want to say, that malloc-free and new-delete should not be mixed in any case.

ok, i get new add the constructor, but you cant use free

thanks

What is the difference between a mathematical mode and a mode in programming?

hello , i have some questtions in c , sorry to interupt : student * student1 = (* student) malloc (sizeof (student); at. What type of return does the malloc function return? b. What is the word (* student) for?

How dare you?

i am sorry XD

ELIMINATION

hello , i have some questtions in c , sorry to interupt : student * student1 = (* student) malloc (sizeof (student); at. What type of return does the malloc function return? b. What is the word (* student) for?

(* student) should be (student *) in this case

hello , i have some questtions in c , sorry to interupt : student * student1 = (* student) malloc (sizeof (student); at. What type of return does the malloc function return? b. What is the word (* student) for?

a. malloc always returns a void *. b. (student *) casts the void * into a student *. This happens automatically in C but needs to be explicit in C++.

hello , i have some questtions in c , sorry to interupt : student * student1 = (* student) malloc (sizeof (student); at. What type of return does the malloc function return? b. What is the word (* student) for?

By default malloc(3) return void *. In your case it will return student * because you wrote ( * student). That's often used in C++ code with C memory allocators, which is wrong, to silence warnings from cpp compiler

If you write in C use malloc(), if you write in C++ use new, but in C++ you can avoid using pointers and new

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