but in this case there is no way to pass an array since arrays used like this will turn into pointers, so there is no question of whether it is ok to pass as array
can`t understand your issue. it is compiled
void fn(char ss[40])
{
}
int main()
{
char s[40];
fn(s);
}
Alex
Alex
and this one is compiled too
void fn(char ss[])
{
}
int main()
{
char s[60];
fn(s);
}
Anonymous
can`t understand your issue. it is compiled
void fn(char ss[40])
{
}
int main()
{
char s[40];
fn(s);
}
s turns into a pointer and the 40 in ss[40] is just ignored by the compiler. ss[] is *ss.
> "Is it ok to pass a string to a function as an array"
you can't pass it as array if you do this. you have to pass it as a pointer. the only way to pass it as an array is to use a pointer to array.
Alex
s turns into a pointer and the 40 in ss[40] is just ignored by the compiler. ss[] is *ss.
> "Is it ok to pass a string to a function as an array"
you can't pass it as array if you do this. you have to pass it as a pointer. the only way to pass it as an array is to use a pointer to array.
yes, but I can`t see the practical problem
Alex
so you can use this function with arrays of different lengths
Anonymous
yes, but I can`t see the practical problem
:/ he asked if it is ok to pass as array instead of pointer. i said you can't pass as array, you have to pass as pointer since that is automatic.
Alex
you wrote this:
you can pass it as an array, but then your function can't work with arrays of different lengths
Alex
you can work with arrays of different length. I can`t see any problem
Anonymous
you wrote this:
you can pass it as an array, but then your function can't work with arrays of different lengths
ye i meant—you can pass it as an array if you REALLY want to, but you will have to do this X absurd thing.
Alex
ok, for practice I suppose its ok to use void fn(char s[])
Anonymous
Anonymous
and this one is compiled too
void fn(char ss[])
{
}
int main()
{
char s[60];
fn(s);
}
and here. you pass a pointer, not an array. you cannot do sizeof(ss) inside fn
Anonymous
that was my point. you can do that if you REALLY want (preserve the details about the array inside the function), but you will have to do X absurd thing.
Anonymous
Mar!o
Tokin
Btw is metaprogramming in C a thing? Do ppl write code within C code? Or a program that outputs a program
MᏫᎻᎯᎷᎷᎬᎠ
You don't need to overload it
Just use for loop and a std::cin inside it
MᏫᎻᎯᎷᎷᎬᎠ
Oh
Then you need to overload it
Just do this in your class
std::istream& operator >>(std::istream& is){
//Your input
return is;
}
Anonymous
Please tell me best tutorial about c++
Dima
google is the best
I_Interface
Anonymous
hey all please can someone tell me how to write a self protecting programme or software i have tried searching on google i did'nt got a better results if anyone know please answer or even if you know some that could help me it will also be helpful
Alex
what is self-protecting?
Anonymous
self protecting are those which cannot be uninstalled easily like u cannot just go and uninstall it
Anonymous
i call it self protecting b'cause when i searched on google from there i got the term
Anonymous
yes
Anonymous
You write an entire custom driver that enforces the policy
Anonymous
you know?
Anonymous
Then hope nobody boots into safe mode
Anonymous
like hardware level programming?
Anonymous
No
Anonymous
Drivers don't always have to be hardware
Anonymous
is there any other way this is the only way?
Anonymous
Use Linux
Get a TPM
Grow a beard (optional)
Set up dm-verity on your entire system
Enable secure boot and pin the key in the TPM
Anonymous
But this will make the entire system immutable
Anonymous
ok i think first option was good thanks for your reply
Anonymous
Is posix semaphore (sem_wait) is faster than traditional unix v (semop) semaphore?
klimi
Sohit
Anyone interested to know where to practice for programming on a daily basis?
Noor
How to check if terminal emulator support EscapeSequence before printing it?
Asdew
Abishek khanna
How to convert minute to second in c language
Abishek khanna
Any one tell me solution
Pavel
Dima
lol
Anonymous
Am really sorry that was purely unintentional, pocket touch caused this spam, This is very embarassing.😔
destroyed
Anyone interested to know where to practice for programming on a daily basis?
Leetcode , daily dose
Anonymous
Hii everyone
Anonymous
How to convert minute to second in c language
using namespace std::chrono;
const auto seconds = duration_cast<second>(minutes);
Cengizhan
Anunay
😂
Anunay
C++ Masterrace
Anonymous
How to convert minute to second in c language
multiply by 2. add 10. multiply by 5. add 10 again. divide by 10. subtract 6. divide by 60.
Anonymous
this is high performance method
Anonymous
x = (10, 20, 30); // x = 30
x = 10, 20, 30; // x = 10
What's the logic behind this?
Dima
lol
olli
Anonymous
if(sizeof(int) > -1)
printf("True");
else
printf("False");
Why does the if condition evaluate to false?
The size of an integer is supposed to be greater than -1.
Cengizhan
if(sizeof(int) > -1)
printf("True");
else
printf("False");
Why does the if condition evaluate to false?
The size of an integer is supposed to be greater than -1.
Because -1 will be promoted to unsigned integer.
Cengizhan
Compile your code with warning -Wsign-compare in GCC and see.
Anonymous
Compile your code with warning -Wsign-compare in GCC and see.
Gives a warning. Understood.
Anonymous
printf(3 + "ABCDEFG")
prints DEFG
The integer is defining the starting index of the string to be printed. Does this work anywhere else other than printf?
Also, where can I find the documentation for this method of printing?
Cengizhan
printf(3 + "ABCDEFG")
prints DEFG
The integer is defining the starting index of the string to be printed. Does this work anywhere else other than printf?
Also, where can I find the documentation for this method of printing?
Nowhere. This is tricky way to print out strings in printf.
Tute
printf(3 + "ABCDEFG")
prints DEFG
The integer is defining the starting index of the string to be printed. Does this work anywhere else other than printf?
Also, where can I find the documentation for this method of printing?
The string is a memory address, you are adding 3 to that memory address thats why it's printing from D
Cengizhan
No readability, no maintability etc.
Tute
Anonymous
Tute
printf(3 + "ABCDEFG")
prints DEFG
The integer is defining the starting index of the string to be printed. Does this work anywhere else other than printf?
Also, where can I find the documentation for this method of printing?
and technically speaking, you can do that in puts() and any other function that prints strings
Anonymous
Anonymous
@cngzhnp @tute_avalos Thanks 👌
Anonymous
Hey community.
I'm new to programming and I would like you guys to revise my code.
PRECISION: I DON'T NEED HELP, i just want you to check it out.
I'm fan of lambda function in python, and I try to use in C in order to reduce the code-making time.
Just need some suggestions, if I should focus on if...else, or use conditional operator ("?") as much as I can (Specially for small codes)
Anonymous