sorry, can someone help me? i have try to do: strcpy(mex.mtext, "hi i'm %d",name); but dont work, how i merge a text and int variables into an char array?

So you want to format string and then copy it, right? If so — take a look at sprintf.

int sprintf(char *str, const char *format, ...);

Works same way as printf but will write to str argument instead of stdout.

good, work

thanks!!

https://t.me/dev_community/18

Hello guys

Hello guys

Hello :D

hello

Hello guys :D

Hi guys👋👋👋

I need help, I've included stdlib.h and have used the system() function to do things on cmd

Can any one of u have working calendar code please guys I really need it

I need help, I've included stdlib.h and have used the system() function to do things on cmd

How can I help you?

But, it's different here, the %random% is hardly random and I couldn't create a file or folder even with the right code! Is c++ defective or is there a solution?

But, it's different here, the %random% is hardly random and I couldn't create a file or folder even with the right code! Is c++ defective or is there a solution?

I am not an experimented programmer, but it might be the seed you are using

I am not an experimented programmer, but it might be the seed you are using

Sorry I'm a beginner What's a seed?

The seed is the starting point the random generator engine uses

Usually you will use the local machine time

I just wrote echo %random% with a loop, but it only changes number after 10 numbers

Usually you will use the local machine time

Ow my!! What's that? It works when I directly put it in CMD but not on c++ system function

I have been tought to use srand(time(NULL)); to start the engine and then assign the value rand() to a variable

Here is a blackjack minigame i had to do in C++ as homework https://pastebin.com/yqVbq5WH

I have been tought to use srand(time(NULL)); to start the engine and then assign the value rand() to a variable

That's a c++ code, I wanted to do it using the system function

There you can see the way I use random numbers

That's a c++ code, I wanted to do it using the system function

I can't help you with that

Implement a Mersenne Twister PRNG for yourself.

There you can see the way I use random numbers

Thanks very much, I needed to know how! And ur so great programmer, 👍👍

/help@GroupButler_bot

Thanks very much, I needed to know how! And ur so great programmer, 👍👍

Thank you. I have started programming in C++ on september. I have more examples if you want them. The only payback is that the code is half english half spanish.

Thanks, but I think I might get what I need at my lvl with all English

But this random thing, thanks for showing me

Good luck :D

Good luck :D

😁👍

There you can see the way I use random numbers

carta = rand()%12+1; is simply wrong. rand() produces random nurmbers between 0 and RAND_MAX, which is 32767 in most systems. Since 32767 is coprime to 12, rand() % 12 will never be uniformly randomly.

carta = rand()%12+1; is simply wrong. rand() produces random nurmbers between 0 and RAND_MAX, which is 32767 in most systems. Since 32767 is coprime to 12, rand() % 12 will never be uniformly randomly.

I didn't know that. How could I solve that problem?

I didn't know that. How could I solve that problem?

Since you're using C++, try: #include <random> namespace { std::random_device rd; std::mt19937 gen(rd()); std::uniform_int_distribution<> dis(1, 12); } // namsepace // application codes std::cout << dis(gen) << std::endl; // iostream required.

I have basic knowledge about programming. I will try to comprehend that code tomorrow

Thank you for the advice

carta = rand()%12+1; is simply wrong. rand() produces random nurmbers between 0 and RAND_MAX, which is 32767 in most systems. Since 32767 is coprime to 12, rand() % 12 will never be uniformly randomly.

Since 32767 / 12 = 2730 and 32767 % 12 = 7, for every 32767 generations, 1, 2, ..., 7 will have one time more than 8, 9, ..., 12. If you loop them with enough times, say 1,000,000 times, you'll find the uniformness is broken. @ccobre

Can any one of u help me out with this problem

I can't seem to understand it

The compiler error message helps you.

Isn't that code missing a lot of semicolons?

Isn't that code missing a lot of semicolons?

std::ostream& operator<<(std::ostream&, std::ostream&) is accepted, I assume.

Isn't that code missing a lot of semicolons?

Hence, syntax speaking, only one semicolon is miss.

lol

Hence, syntax speaking, only one semicolon is miss.

Sorry mate, im already lost :D

Sorry mate, im already handsome :D

Of course! For understanding the difference between array name and pointer to the first element in the array, just simply remember this: when and only when the name of an array appears in an expression as an value, it's equal to the pointer to the first element in the array.

Hi Liam. I thought about this again in the shower this morning. Would you agree that bare array names only act as an rvalue pointer, but never as an lvalue?

Hi Liam. I thought about this again in the shower this morning. Would you agree that bare array names only act as an rvalue pointer, but never as an lvalue?

what about sizeof(array)?

there goes my theory, I guess

Hi Liam. I thought about this again in the shower this morning. Would you agree that bare array names only act as an rvalue pointer, but never as an lvalue?

I'm not sure, but almost yes, I guess. In sizeof(array), we pass the bare array name to the sizeof operator, however, this time array is applied as the identity of array, but not a value. Hence, sizeof(array) gives the length of the array in byte, but not the length of a pointer.

Ok

Hae guys

Hey i wanna be a good programmer guys

Hey i wanna be a good programmer guys

Work Hard!

Glad to know.

Work Hard!

But i am a beginner😔😔😔

But i am a beginner😔😔😔

Everybody is ...

When they start

¯\_(ツ)_/¯

😂😂it seems complicated

😂😂it seems complicated

It isn't .. Open your brain and start working ..

Most importantly .. Make your own algos

So that things go in flow for you

Others might think differently so you won't always understand it and claim the code to be complicated

😊😊😊now how do i start cause i only understand html

😊😊😊now how do i start cause i only understand html

www.learn-cpp.org Get a basic idea from there and then see sample codes from IDEs and use the Help file of different headers

And challenge yourself

www.learn-cpp.org Get a basic idea from there and then see sample codes from IDEs and use the Help file of different headers

Edited the link :)

Now with programming what do i end up creating?

Now with programming what do i end up creating?

Kinda everything

Somethings might be easier with different languages tho

Kinda everything

😳😳😳ok what have you created?

But you can pretty much do everything