@programminginc - страница 711

BinaryByter

hey guys i am contributing in open source using c and c++ there are million lines of code but documentation does't give much in detail can u help how to understand the flow and to understand

this is a very good question!

BinaryByter

so first of all, i'd advise you to contact the guy who created the project

BinaryByter

and ask them if they can give you some hints

BinaryByter

maybe they have diagrams

BinaryByter

you can try to create your own diagrams

BinaryByter

also, look at the function signatures

Anonymous

ya i was thinking that but owner does'nt give any response to newbie

Anonymous

i have tried trust me

BinaryByter

which project is it?

BinaryByter

is it linux perchance?

Anonymous

libuv

Anonymous

and node

BinaryByter

nodejs?

BinaryByter

libuv?

Anonymous

yees

BinaryByter

tbh i'd keep as far as possible from nodejs

Anonymous

why

Anonymous

ok ignore node what about libuv

BinaryByter

its made by google iirc

BinaryByter

what is that?

Anonymous

async callback

Anonymous

non io blocking

BinaryByter

don't get into that as a beginner

BinaryByter

I mean

BinaryByter

do what you want

Anonymous

Guyzz

Anonymous

Can u tell me the out put?

klimi

Ban

Anonymous

Which?

Anonymous

I am copy

Anonymous

x=5;

Anonymous

Cout<< x++ + ++x;

Anonymous

Not sure which it is guyzz

BinaryByter

Cout<< x++ + ++x;

in both cases its the same

BinaryByter

or rather:

Anonymous

Tell me the final output

BinaryByter

well 2x + 2

Anonymous

12 u mean?

BinaryByter

yep

BinaryByter

sorry, I thought someone who visists the ivy league understands variables

olli

Cout<< x++ + ++x;

Compile error

BinaryByter

Compile error

needs parenthesies?

olli

Yes, while parsing the longest operator will be chosen, so x++ ++ +x which is invalid, (afaik)

BinaryByter

Ohhhh

BinaryByter

I see

Anonymous

Yes, while parsing the longest operator will be chosen, so x++ ++ +x which is invalid, (afaik)

It not error

Anonymous

Ask in assignment

BinaryByter

Yes, while parsing the longest operator will be chosen, so x++ ++ +x which is invalid, (afaik)

is the parsing defined in the standard?

Anonymous

is the parsing defined in the standard?

No

olli

Ask in assignment

main.cpp: In function ‘int main()’: main.cpp:16:21: error: lvalue required as increment operand std::cout << x+++++x; ^

olli

is the parsing defined in the standard?

Yes, this is defined

Anonymous

Can give bracket?

Anonymous

Or space

BinaryByter

Yes, this is defined

alright!

Anonymous

Yes, this is defined

In which version?

BinaryByter

In which version?

in any standard

Anonymous

Thanks

Anonymous

U ban me why

BinaryByter

wat?

Anonymous

From Python

Anonymous

I ban

مهند علاء الدين

@mohnadala

#include<iostream> Using namespace std; Int main() { Int i; Cout<<"Hello"; Return 0; }

BinaryByter

#include<iostream> Using namespace std; Int main() { Int i; Cout<<"Hello"; Return 0; }

hey

olli

the next preprocessing token is the longest sequence of characters that could constitute a preprocessing token lex.pptoken#3.3

BinaryByter

the next preprocessing token is the longest sequence of characters that could constitute a preprocessing token lex.pptoken#3.3

thanks!

olli

Example :  The program fragment x+++++y is parsed as x ++ ++ + y, which, if x and y have integral types, violates a constraint on increment operators, even though the parse x ++ + ++ ymight yield a correct expression.  — end example

BinaryByter

but if I do

BinaryByter

x ++ ++ ++ y

Anonymous

Can not modify the same x in the same statement?

BinaryByter

will that compile?

Mihail

Example :  The program fragment x+++++y is parsed as x ++ ++ + y, which, if x and y have integral types, violates a constraint on increment operators, even though the parse x ++ + ++ ymight yield a correct expression.  — end example

So it will work with the spaces?

Mihail

x ++ ++ ++ y

That no

olli

So it will work with the spaces?

Preprocessing tokens can be separated by white space; this consists of comments, or white-space characters (space, horizontal tab, new-line, vertical tab, and form-feed), or both. lex.pptoken#2

olli

x ++ ++ ++ y

No, the middle operator needs an lvalue to increment.

BinaryByter

No, the middle operator needs an lvalue to increment.

well the prior value

BinaryByter

the return value of x ++

olli

error: lvalue required as increment operand int y = x++ ++ ++x;

BinaryByter

y = (x++) ++;

BinaryByter

?

olli

No