@programminginc - страница 1927

András

Gcc compiler will compile that

Ilya

Is there any sources for implementing data structures in c++ ? Please don't say to Google it. I had tried that

What do you mean by "sources for implementing" ?

András

But it's compiler feature

Ilya

Well yes, but actually no

Actually no, this is not valid code.

Ilya

Gcc compiler will compile that

Because this is GCC extension, unsupported by other compilers.

András

Actually no, this is not valid code.

http://ideone.com/hmBv4D

Ilya

Really?!! Interview dumb questions with the greatest of all time?! That's all they got out with?!

Yes, I agree, stupid article.

András

Because this is GCC extension, unsupported by other compilers.

Becouse there is no such array definition in standard, and only gcc have made it

Ilya

Becouse there is no such array definition in standard, and only gcc have made it

I Am trying to say same thing, this is not valid C++ code

Stanislav

I Am trying to say same thing, this is not valid C++ code

it's a valid c code but not c++ :)

Stanislav

warning: variable length arrays are a C99 feature [-Wvla-extension]

András

it's a valid c code but not c++ :)

Nope

Ilya

it's a valid c code but not c++ :)

I corrected

Loki

Hello guys, any vim user here? I created a shortcut mapping to compile and run my c++ code on neovim. But seems, this shortcut is not working when I open a new buffer. Any idea?

Anonymous

Hello guys, any vim user here? I created a shortcut mapping to compile and run my c++ code on neovim. But seems, this shortcut is not working when I open a new buffer. Any idea?

Use normal IDE, not this And VIM is offtopic here

Loki

Use normal IDE, not this And VIM is offtopic here

oh sorry, I didn't know vim is offtopic here. I just love writing on vim. Anyway, thanks.

András

Use normal IDE, not this And VIM is offtopic here

Why you hate vim? If u want so, you can describe in OT or private

Dede

It is very bad idea in C to pass a structure to a function by value, like you do. Here it is doubly so because you need output parameter from the function. If you pass structure by value, you copy it and only the copy gets modified.

Thanks for the insight. 🙏

András

I Am trying to say same thing, this is not valid C++ code

It's VLA

kappa

Please help me 🤚 Reverse digit of a number using a recursive function..

Take out no of digits and make an araay and in recursion while(n!=0)

Anonymous

#include <iostream> #include <cstdio> using namespace std; int main() { int n1,n2; string a[9]{"one","two","three","four","five","six","seven","eight","nine"}; cin>>n1 >>n2; if (n1%2==0) cout<<"even"<<endl; else cout<<"odd"<<endl; if (n2%2==0) cout<<"even"<<endl; else cout<<"odd"<<endl; for(int i=n1;i<=n2;i++) cout<<a[i-1]<<endl; return 0; }

Anonymous

please help

Anonymous

this code print even and odd for n1 and n2

Anonymous

#include <iostream> #include <cstdio> using namespace std; int main() { int n1,n2; string a[9]{"one","two","three","four","five","six","seven","eight","nine"}; cin>>n1 >>n2; for(int i=n1;i<=n2;i++) cout<<a[i-1]<<endl; if (n1%2==0) cout<<"even"<<endl; else cout<<"odd"<<endl; if (n2%2==0) cout<<"even"<<endl; else cout<<"odd"<<endl; return 0; }

Anonymous

this dont

Anonymous

can tell why

Bojan_Krdemn

Hey! What is happening inside a map when algorithm insert a dublicate key there?

Bojan_Krdemn

consider a map Dan - 1954 Pete 1945 Joe - 1987 then i insert Dan 1946

Ilya

Hey! What is happening inside a map when algorithm insert a dublicate key there?

Who knows...

Bojan_Krdemn

will the algorithm throw an error

Bojan_Krdemn

or it will rewrite the key

Anonymous

Hey! What is happening inside a map when algorithm insert a dublicate key there?

Read the docs

Bojan_Krdemn

readed, no clarity. unique keys, ok. and if i have a map kinda of <Name, vector> and when i add Dan 1946 i want the vector to hold two values, namely {1954, 1946}

Anonymous

Read the docs

please mine issue too

Anonymous

#include <iostream> #include <cstdio> using namespace std; int main() { int n1,n2; string a[9]{"one","two","three","four","five","six","seven","eight","nine"}; cin>>n1 >>n2; if (n1%2==0) cout<<"even"<<endl; else cout<<"odd"<<endl; if (n2%2==0) cout<<"even"<<endl; else cout<<"odd"<<endl; for(int i=n1;i<=n2;i++) cout<<a[i-1]<<endl; return 0; }

.

Bojan_Krdemn

yeah, i can experiment with ide, but may be you guys can tell from head.

Anonymous

yeah, i can experiment with ide, but may be you guys can tell from head.

Read the documentation already or you'll get the warn

Anonymous

What hard in reading docs?

Anonymous

Wat

Bojan_Krdemn

ok, found something https://en.cppreference.com/w/cpp/container/map {insert or assign}

Artöm

readed, no clarity. unique keys, ok. and if i have a map kinda of <Name, vector> and when i add Dan 1946 i want the vector to hold two values, namely {1954, 1946}

You need to use .find manually then

Bojan_Krdemn

Hasn't that realisation of map https://web.stanford.edu/class/archive/cs/cs106b/cs106b.1126/materials/cppdoc/Map-class.html#Method:containsKey become obsolette with 17th version of C++? What do you think guys?

Ilya

Hasn't that realisation of map https://web.stanford.edu/class/archive/cs/cs106b/cs106b.1126/materials/cppdoc/Map-class.html#Method:containsKey become obsolette with 17th version of C++? What do you think guys?

This is not STL map, this is not STD. This is another library, not STD implementation

Bojan_Krdemn

it performs the same functions, doesn't it?

Ilya

Hasn't that realisation of map https://web.stanford.edu/class/archive/cs/cs106b/cs106b.1126/materials/cppdoc/Map-class.html#Method:containsKey become obsolette with 17th version of C++? What do you think guys?

This is some Stanford course on C++ data structures and this is its code, not related to STL anyhow

Bojan_Krdemn

what prevents me from abandoning that crutch

Ilya

it performs the same functions, doesn't it?

Probably, but who knows...

Tomas

Is there a way to know if popen output is from stderr or from stdout?

Ilya

Is there a way to know if popen output is from stderr or from stdout?

this should not make any difference for you

Tomas

this should not make any difference for you

I have a lot of popen calls with different commands. How else would i know if command succeeded or not, and id if it didn't what went wrong?

uniq

How can i check is exist process without folder /proc in Linux? I tried making kill(pid,0), but this instruction making process and giving pid of myself

Ilya

I have a lot of popen calls with different commands. How else would i know if command succeeded or not, and id if it didn't what went wrong?

By sniffing commands's process returned code

AMIT

C tutorial please

AMIT

With e books

Ilya

C tutorial please

No tutotials, read books

holo

nut shell