I am also not pro

#offtopic let's go to off topic group

Yes, then constructor with std::initializer_list is what you need. Note that for the objects that will be cunstructed (like std::pair in the example of map) their constructors with multiple arguments should not be marked as explicit to be constructed with {}

thanks man

https://pastebin.pl/view/68fd867a This code is supposed to take a 4 digit number and break it into individual digits and then display the table of last two digits, taking first two digits as starting and ending point of that table. But in my case, only 1st table is being displayed and second for loop is not being executed. Why is this code not displaying two tables? Can someone please help me?

Considering following program code, which one of option is correct - main( ) { char *p = "hello world"; p[0] = 'H'; printf("%s", p); } a. Has Runtime error. b. Would output "Hello world" c. Has Compile error d. Would Output "hello world"

[xcb] Unknown sequence number while processing queue [xcb] Most likely this is a multi-threaded client and XInitThreads has not been called [xcb] Aborting, sorry about that. main: xcb_io.c:269: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed. how can i fix this? its working in manjaro KDE but not in arch awesome wm is this problem of xorg or C? works in dwm and bspwm though

Considering following program code, which one of option is correct - main( ) { char *p = "hello world"; p[0] = 'H'; printf("%s", p); } a. Has Runtime error. b. Would output "Hello world" c. Has Compile error d. Would Output "hello world"

b

//sieve of eratosthenes #include<iostream> using namespace std; void primeSieve(int n) { //int *array{ new int[length]{} }; syntax of initialize a dynamic array to 1 or 0 int *A{new int[n+1]{1}}; for(int i=2;i*i<=n;i++) { if(A[i]==1) { for(int j=i*i;j<=n;j=j+i) { A[j]=0; } } } for(int i=2;i<=n;i++) { if(A[i]==1) cout<<i<<' '; } cout<<endl; } int main() { cout<<"enter number till that you want to print prime numbers"<<endl; int N; cin>>N; primeSieve(N); return 0; }

anyone please check where i m wrong

i m not getting output after entering input

Because in case of the map, initializer_list can help to pass objects that will be stored in the container, but these will not affect type as far as I remember. And pair and tuple are made with templates so their type depends on every element of the constructor

Sorry for late reply since i was out and the confusion in my illustration. it is a different kind of question about the usage of such syntax in template programming. as far as intuition, one can use template<> struct MyStruct<MyType> to customize the implementation of user defined class (which is similar to what std::hash did for hashing of basic types) , under the base definition of template<class T> struct MyStruct{}

However, I came across this pattern of definition but find it hard to understand the usage. template<class T> struct MyStruct<T*>

Hello everyone

while (1){ unsigned gpio=PORTD; if (gpio & (0x01|0x02|0x04)){ PINB=1; } }

while (1){ uint8_t gpio=PIND; uint8_t out=0; if (gpio & (0x01|0x04)) out|=2; if( gpio&0x2 ) out|=1; PORTB=out; }

Can you write those codes in assembly

I haven't confidence with this language,It would be better for helping me

However, I came across this pattern of definition but find it hard to understand the usage. template<class T> struct MyStruct<T*>

Not sure if I know this syntax with using T twice in the definition like this 🤔

the exact same definition can be seen here https://en.cppreference.com/w/cpp/utility/hash

but i tried to look at the functional source code, in which i cannot find the relevant definition

/get cbook

the exact same definition can be seen here https://en.cppreference.com/w/cpp/utility/hash

Can you point it out, I'm not very concentrated right now to find it. I see ones with template<>, these are template specialisations. By the way, the code you've sent looks like partial specialization (but it really hard to remember how and in what order the parameters go when you're not writing it every day, so I'm not sure).

#ask How to fix this problem in VSCode? gcc.exe: Angka: No such file or directory gcc.exe: 1-500.c: No such file or directory gcc.exe: 1-500: No such file or directory gcc.exe: no input files

#ask How to fix this problem in VSCode? gcc.exe: Angka: No such file or directory gcc.exe: 1-500.c: No such file or directory gcc.exe: 1-500: No such file or directory gcc.exe: no input files

And how it relates to VS Code, may I ask?

You fix this problem by changing current directory in your console

How long does it take to learn C #

How long does it take to learn C #

/ban sorry mate, but it is forever for you since you can't read

/warn

/ban sorry mate, but it is forever for you since you can't read

Ahahahahah

I'm want to start competitive programming and I know C already

I'm want to start competitive programming and I know C already

Download an app called Dcoder

There are 187 code based questions

Download an app called Dcoder

Download an app called Dcoder

It is not available for Windows

It is not available for Windows

I just want to start working with it

And learn more concept along with implementation

What should I prefer?

What should I prefer?

What do you mean?

What do you mean?

I mean I want to start competetive programming in c++

I mean I want to start competetive programming in c++

Should I start learning with book or youtube tutorials?

Sorry, can anyone give me the idea how to do next thing: find most frequent element in char array. I google it, but codes from sites don't really work as they should...

I mean I want to start competetive programming in c++

Ah, start with discrete mathematics then DSA stuff.

Ah, start with discrete mathematics then DSA stuff.

Yes, can you give me more info please 🙏

Ah, start with discrete mathematics then DSA stuff.

I know c

Should I start learning with book or youtube tutorials?

DSA there is a YouTube series by mitopencourseware.

I know c

How much do you know it? Just knowing the language syntax and featutes isn't enough.

DSA there is a YouTube series by mitopencourseware.

But firstly I have to learn c++ basics? Right?

But firstly I have to learn c++ basics? Right?

Not really

How much do you know it? Just knowing the language syntax and featutes isn't enough.

I know till pointers and recursion

I know till pointers and recursion

You don't qualify to say you know C then.

Not really

But it's said that it's good to do competitive programming in c++. Isn't it?

But it's said that it's good to do competitive programming in c++. Isn't it?

The more you know the better

You don't qualify to say you know C then.

But now I want to learn c++ amd continue my competitive programming in c++

But now I want to learn c++ amd continue my competitive programming in c++

Well if you want to learn C++ just for the sake of doing competitive programming. I wouldn't stop you but you could just do everything you can in C++, in C

The more you know the better

Isn't it a good idea to leave c which I left 6 months ago and have a fresh start with c++??

Well if you want to learn C++ just for the sake of doing competitive programming. I wouldn't stop you but you could just do everything you can in C++, in C

What about those c++ libraries?

What about those c++ libraries?

All those libraries you find will most probably have a port to C, except maybe boost libs, idk. Lemme check

Isn't it a good idea to leave c which I left 6 months ago and have a fresh start with c++??

It doesn't matter. DSA and mathematics which you actually need for competitive programming are not language dependent.

The speed and ease of writing of the program in those language would be, but that's a different matter

It doesn't matter. DSA and mathematics which you actually need for competitive programming are not language dependent.

I'm really confused now. Please help me to decide what should I prefer?

Should I continue with c where I left off or have a fresh start with c++?

Sorry, can anyone give me the idea how to do next thing: find most frequent element in char array. I google it, but codes from sites don't really work as they should...

use hash to count frequency of each char. then output max

The speed and ease of writing of the program in those language would be, but that's a different matter

That's also a factor counted in the cp

I'm really confused now. Please help me to decide what should I prefer?

As far as language is concerned do whatever you wish, if you want to learn C do so, if you want to start with C++ do so. As for competitive programming, learn DSA and discrete Mathematics

As far as language is concerned do whatever you wish, if you want to learn C do so, if you want to start with C++ do so. As for competitive programming, learn DSA and discrete Mathematics

Okay. Thanks

That's also a factor counted in the cp

C and C++ are nearly the same, when it comes to speed. Infact C programs would fare slightly better than C++ most of the times.

But speed is also dependent on how you code so

As far as language is concerned do whatever you wish, if you want to learn C do so, if you want to start with C++ do so. As for competitive programming, learn DSA and discrete Mathematics

Just last question. In which of these language it's easier to write code?

C and C++ are nearly the same, when it comes to speed. Infact C programs would fare slightly better than C++ most of the times.

still c++ would be better for competitive programming i guess because of built in library support

Just last question. In which of these language it's easier to write code?

Between C and C++? Both have the same difficulty level

still c++ would be better for competitive programming i guess because of built in library support

Yes that's point, I were Wanted to pointed out

still c++ would be better for competitive programming i guess because of built in library support

C has a lot of math libraries.

Between C and C++? Both have the same difficulty level

Then why almost 75% competitive programmer are using c++?

C has a lot of math libraries.

ah i am not familiar :)

Then why almost 75% competitive programmer are using c++?

Because it's more modern and popular

I guess "modern" is not a good word because it gives you the illusion that it's better, which isn't. Javascript is modern too lol

hello

I guess "modern" is not a good word because it gives you the illusion that it's better, which isn't. Javascript is modern too lol

its new* would be better

its new* would be better

Yep

am new here

I guess "modern" is not a good word because it gives you the illusion that it's better, which isn't. Javascript is modern too lol

Javascript op😂