@programminginc - страница 1973

Dima

(bad practice for multithreading, but you get it)

Anonymous

pointer just points to any object in memory

you need to use pointer to access memory or you will be just using a copy of the variable

Anonymous

@CanerASLAN

Anonymous

calloc has two arguments first — count of elements to alloc second — size in bytes of each element

char **words = malloc(5 * sizeof(char*)); for(int i = 0;i < 5;++i){ words[i] = (char *)malloc(20+1); }

Anonymous

this worked

Anonymous

for(int i = 0;i < size;++i){ free(words[i]); } free(words);

Anonymous

then i free each member of array then the array itself

Anonymous

lets compile and see what happens lol

Howl

#googleit

I tried searching Google :D just i don't understanding the logic

Dima

I tried searching Google :D just i don't understanding the logic

do you have knowledge with high level languages?

Howl

No.

Dima

or nevermind then pointer just points to object in memory kinda proxy for its object

Howl

What problems do I encounter in the future if I skip pointers

Howl

or should I work more? :D

Dima

What problems do I encounter in the future if I skip pointers

a lot, but you can use std shared_ptr (well you better get to know pointers)

Dima

its really easy as you get it

Howl

okay, I will. Thanks

Francisco

a lot, but you can use std shared_ptr (well you better get to know pointers)

Just a little point, most of the times unique_ptr would probably be more suitable

Dima

yeah I thought about this later

Ilya

Hi everyone? Where can we learn pointers? (with details) because I still don't understand ... where will it be useful? Can you give an example?

If you skip pointers you will not be able to build all effective data structures and ability to work with array s. Although you still will be able to write and understand some programs

Alexander

is this the only way to pass a reference to an expression without creating a temporary variable? void handle_foo(Foo*); handle_foo(&(Foo[]){ get_foo() }[0] );

Dima

Alexander

This is for generated code of course.

Anonymous

`qsort(words,size,stringlength,alphabetical_Order);``

Anonymous

there is an issue with my qsort lol

Anonymous

qsort(words,size,sizeof(char *),alphabetical_Order);

Anonymous

this was the fix for sorting array of strings

Anonymous

is this the only way to pass a reference to an expression without creating a temporary variable? void handle_foo(Foo*); handle_foo(&(Foo[]){ get_foo() }[0] );

Your code doesn't compile Please provide more information to get the answer

professor

Simple login vs openid + oauth2 vs oauth2 in a desktop app?

Ilya

is this the only way to pass a reference to an expression without creating a temporary variable? void handle_foo(Foo*); handle_foo(&(Foo[]){ get_foo() }[0] );

What and where should you pass, explain...

Ilya

Simple login vs openid + oauth2 vs oauth2 in a desktop app?

And what is the problem?

professor

And what is the problem?

which one would I implement or even better which scenarios?

Ilya

Simple login vs openid + oauth2 vs oauth2 in a desktop app?

Why at all do you need Web authentication in a desktop app?

Ilya

which one would I implement or even better which scenarios?

Which one is better I will not tell you, though...

professor

Why at all do you need Web authentication in a desktop app?

click-based auth than writing username/password beside I don't want to store passwords

Mat

Ricky no self-promoting, thank you

Anonymous

I use archlinux, have boost and boost-libs installed. But I get error when compile the code, anyone can help?

Anonymous

don't know why deleted gist link. Cannot post gist link here...

Ilya

don't know why deleted gist link. Cannot post gist link here...

no one will be able to help until you show your error messages. use pastebin.com

olli

don't know why deleted gist link. Cannot post gist link here...

https://gist.github.com/i6o6i/34a0d83d154d1238715fbe86734e5b54

Anonymous

thanks

olli

I use archlinux, have boost and boost-libs installed. But I get error when compile the code, anyone can help?

your size should match the boost::extents "dimension", e.g. boost::multi_array<double,2> a(boost::extents[3][4]); or the whole code #include <stdio.h> #include <boost/multi_array.hpp> int main() { boost::multi_array<double,2> a( boost::extents[3][4]); for(size_t i=0;i<3;i++) { for(size_t j=0;j<4;j++) { a[i][j]=3; } } return 0; } https://godbolt.org/z/Q9n-4r

Anonymous

Ohh, I fogot that, but I still cannot compile the program. Need I explitly link boost libs when compile? like -lboost

olli

Ohh, I fogot that, but I still cannot compile the program. Need I explitly link boost libs when compile? like -lboost

what error do you get? I did not need to link any libraries

Anonymous

Ok.. I just use gcc to compile...

Anonymous

I think gcc and g++ is the same, in some way. But I was wrong. Thanks btw. All solved