@programminginc - страница 1537

BinaryByter

|= is the same as c = c | 2;

BinaryByter

| is the "bitwise or" operator

I_Interface

| is the "bitwise or" operator

ah, thx for info, mate

BinaryByter

sure 😊

🐰🐾 سمیه

if c is 0, it will be 1 and 2 lol

I dunno why the programmer just hasn't assigned the values of 1 and 2 to c

BinaryByter

maybe he's on an architecture where logic gates are faster than assignments?

🐰🐾 سمیه

I don think so, it's a simple program

🐰🐾 سمیه

http://www.learntosolveit.com/cprogramming/Ex_5.14_sortrevnum.html

🐰🐾 سمیه

if you see any reason for that, please let me know

I_Interface

| is the "bitwise or" operator

forgot it, coz prefer to use C++)

BinaryByter

if you see any reason for that, please let me know

because or doesnt tamper with the current value of c

🐰🐾 سمیه

http://www.learntosolveit.com/cprogramming/Ex_5.14_sortrevnum.html

in the program c is option

BinaryByter

yes I know

🐰🐾 سمیه

because or doesnt tamper with the current value of c

great👌🌷

BinaryByter

and since you want to add many options

MyDear

if you see any reason for that, please let me know

دنبال چی هستید؟

BinaryByter

and since you want to add many options

c will just add the option to the variable

BinaryByter

it will not set c to be the option

🐰🐾 سمیه

دنبال چی هستید؟

problem solved dear

MyDear

problem solved dear

چه مشکلی دارید؟

Mihail

چه مشکلی دارید؟

This chat is English only

BinaryByter

English only!

MyDear

This chat is English only

ok🙏

🐰🐾 سمیه

چه مشکلی دارید؟

I've a persian group, but that's a trash.

MyDear

problem solved dear

what your problem?

MyDear

I've a persian group, but that's a trash.

pv

🐰🐾 سمیه

because or doesnt tamper with the current value of c

wait, but option is set to 1 or two, so its value changes

🐰🐾 سمیه

pv

I explained about the problem

BinaryByter

wait, but option is set to 1 or two, so its value changes

2 is 10 in binary

BinaryByter

1 is 01 in binary

BinaryByter

2 | 1 = 11

O.

hi, advice me article about concurrent code on C11 please

🐰🐾 سمیه

true, so could you explain in detail why it hasn't just set option to 1 r 2 instead of using bitwise operator?

BinaryByter

what?

🐰🐾 سمیه

I mean we could simply set values of NUMBER or DEC to option

BinaryByter

No we couldn't

🐰🐾 سمیه

why using or operator

BinaryByter

because then we would overwrite other options

BinaryByter

if we have option one and two: your solution: options = 1 = 01 options = 2 = 10 end result: options = 2 My solution: options |= 1= 01 options |= 2 = 11 end result: options = 3

🐰🐾 سمیه

so it means our program may depend in option being 3, correct?

BinaryByter

No

BinaryByter

it just means that you fill the bits

BinaryByter

a bit like you would set different elements in an array

🐰🐾 سمیه

it just means that you fill the bits

whats point in it?

🐰🐾 سمیه

yes

BinaryByter

whats point in it?

that way we can store two things inside of one char

🐰🐾 سمیه

got a clue,. I'll read it in depth, if I don't undestand , I'll ask yo again. thanx

BinaryByter

#ot

🐰🐾 سمیه

is there anyone willing to give a long aswer?

S.

is there anyone willing to give a long aswer?

what is the question exactly?

🐰🐾 سمیه

these two programs are almost the same. one from the book, and one the prgrame we discussed

🐰🐾 سمیه

why in the book there are two functions, one for lexicographical sort, and one for numerical sort, but in the program we talked about there isn't any function for lexicographical sort and, and still it works for that purpose?

🐰🐾 سمیه

http://www.learntosolveit.com/cprogramming/Ex_5.14_sortrevnum.html

🐰🐾 سمیه

http://www.learntosolveit.com/cprogramming/Ex_5.14_sortrevnum.html

this is the link of the program without a function for lexicographical sort

S.

this is the link of the program without a function for lexicographical sort

not sure if you’re asking for the function pointer thing ...

S.

strcmp is a function from the library. numcmp is implemented somewhere in the source code

S.

one of them will be fed to qsort as a pointer to function

S.

that’s all ( so what’s the question?

🐰🐾 سمیه

one of them will be fed to qsort as a pointer to function

my qustion is, why in the program which I shared its link, there isn't any strcmp and still it works for that purpose?

S.

my qustion is, why in the program which I shared its link, there isn't any strcmp and still it works for that purpose?

the implementation/definition of strcmp is in the standard library, when you compile, and do the linking, the linker will find strcmp in the standard lib

S.

and the declaration of strcmp is in already in the header file string.h

S.

If you’re using gcc, then strcmp is in glibc

🐰🐾 سمیه

You misunderstood me

🐰🐾 سمیه

I'm saying that, there isn't any strcmp or any other function for that purpose in the second program

🐰🐾 سمیه

And why it still works for lexicographical sorting

Anonymous

/* numeric ? numcmp : strcmp if(numeric) numcmp; else strcmp; The program in the book has numeric value set to 0; So it's using string compare, But in the link you sent the numeric Value is set to 1 and the strcmp isn't even being used there. */

🐰🐾 سمیه

In this one there is strcmp

🐰🐾 سمیه

http://www.learntosolveit.com/cprogramming/Ex_5.14_sortrevnum.html

But in this one, it doesn't exist

Anonymous

Read my text

Anonymous

In this one there is strcmp

int numeric = 0;

Anonymous

But in this one, it doesn't exist