so you can see repeated code inside switch
but in this case you would need to assign every time? also, since this looks like a potential hotspot I would prefer not to use function pointers.
olli
Sergey
but in this case you would need to assign every time? also, since this looks like a potential hotspot I would prefer not to use function pointers.
no, it would be before the loop, registerID is the same for all members of pa_stFbInfo
Sergey
Sergey
but in this case you would need to assign every time? also, since this looks like a potential hotspot I would prefer not to use function pointers.
Or do you mean that i will use pointer for each iteration?
another words, the current implementation is a good way?
olli
Or do you mean that i will use pointer for each iteration?
another words, the current implementation is a good way?
yes, I do prefer your implementation
olli
thank you
another option could be this https://paste.ubuntu.com/p/SBRvwrcGQ2/ where you basically have the loop inside the function, so you don't have to switch on every iteration.
Sergey
I see, thanks
Anonymous
#include <stdio.h>
#include <math.h>
int main () {
int x ;
float y,z ;
printf("enter a number : " );
scanf("%f", &y);
x = floor(y);
z = y-x ;
while (fmod(z,1)!= 0) {
z *=10;}
printf("x is : %d", x) ;
printf("z is : %f", z) ;
return 0; }
input : 12.5
x is 12
z is 5.00000
how can i have z = 5 instead of 5.0000?
Anonymous
cast data types
Anonymous
z want to be int
Anonymous
yes
#include <stdio.h>
#include <math.h>
int main () {
int x;
float y,z;
printf("enter a number : " );
scanf("%f", &y);
x = floor(y);
z = y-x ;
while (fmod(z,1)!= 0) {
z *=10;}
printf("x is : %d", x) ;
printf("z is : %d", int(z)) ;
return 0; }
Anonymous
#include <stdio.h>
#include <math.h>
int main () {
int x;
float y,z;
printf("enter a number : " );
scanf("%f", &y);
x = floor(y);
z = y-x ;
while (fmod(z,1)!= 0) {
z *=10;}
printf("x is : %d", x) ;
printf("z is : %d", int(z)) ;
return 0; }
it has error for int(z)
:::: expected expression before int
Roshan
#include <stdio.h>
#include <math.h>
int main () {
int x;
float y,z;
printf("enter a number : " );
scanf("%f", &y);
x = floor(y);
z = y-x ;
while (fmod(z,1)!= 0) {
z *=10;}
printf("x is : %d", x) ;
printf("z is : %d", int(z)) ;
return 0; }
I don't think you've to write:
x = floor(y);
Simply write:
x = y;
Roshan
As x is int type
Xudoyberdi
#include <stdio.h>
#include <math.h>
int main () {
int x;
float y,z;
printf("enter a number : " );
scanf("%f", &y);
x = floor(y);
z = y-x ;
while (fmod(z,1)!= 0) {
z *=10;}
printf("x is : %d", x) ;
printf("z is : %d", int(z)) ;
return 0; }
Before last two printf statements
Declare z variable in int type
Xudoyberdi
Before last two printf statements
Declare z variable in int type
Int z=z; if that makes sense
Anonymous
it has error for int(z)
:::: expected expression before int
https://onlinegdb.com/ZHFVesNFQ
Roshan
#include <stdio.h>
#include <math.h>
int main () {
int x;
float y,z;
printf("enter a number : " );
scanf("%f", &y);
x = floor(y);
z = y-x ;
while (fmod(z,1)!= 0) {
z *=10;}
printf("x is : %d", x) ;
printf("z is : %d", int(z)) ;
return 0; }
I guess x is of int type so why is it written printf("x is: %d, x);
Roshan
I think it is %i in C IDK
Anonymous
I think it is %i in C IDK
both d and i can be used for it . and I just edited int(z) or (int) z part only.
Anonymous
amir , at least say ,what do you want to do ? I didn't concern your full code .I concerned only about it's output .
Anonymous
amir , at least say ,what do you want to do ? I didn't concern your full code .I concerned only about it's output .
i want to seprate a float number into two integers
example : 25.321
x is : 25
y is : 321
olli
i want to seprate a float number into two integers
example : 25.321
x is : 25
y is : 321
https://stackoverflow.com/a/51838004/4416573
Roshan
i want to seprate a float number into two integers
example : 25.321
x is : 25
y is : 321
Use string to store that number.
If( !(isdigit(str[i])) ){
//This is where you encounter the dot
}
Roshan
Then you can use the stringstream to get that part of number
Anonymous
Use string to store that number.
If( !(isdigit(str[i])) ){
//This is where you encounter the dot
}
u mean i store the float number in a string?
Anonymous
i get the input like string?
Mar!o
I've discovered something really weird in C++!
I wanted to load a binary file into a Blob - typedef for std::vector<std::byte> in my engine
Mar!o
First I did it the modern C++ way:
auto blob_from_disk(const std::filesystem::path& file) -> Blob {
std::basic_ifstream<std::byte> stream(file, std::ios::in | std::ios::binary);
if (!stream) {
return {};
}
return std::vector<std::byte>(std::istreambuf_iterator<std::byte>(stream), std::istreambuf_iterator<std::byte>());
}
Mar!o
Loading a 24MB texture file took almost 900ms! I already was suspicious that's a way to long!
Mar!o
auto blob_from_disk(const std::filesystem::path& _file) -> Blob {
const auto path = _file.string();
FILE* file;
#if COM_MSVC
fopen_s(&file, path.c_str(), "rb");
#else
file = fopen(_file.data(), "rb");
#endif
[[unlikely]] if(!file) {
return {};
}
fseek(file, 0, SEEK_END);
const long size = ftell(file);
[[unlikely]] if(!size) {
return {};
}
rewind(file);
Blob blob = {};
blob.resize(size);
const auto read = fread(blob.data(), sizeof(std::byte), size, file);
blob.resize(read);
return blob;
}
Changed the code to use the C file library
Mar!o
And it went from 900ms to 80ms! The C std version was more than 10x faster!
Mar!o
This is incredible dangerous! I thought that the modern C++ version is smart enought to reserve
the vector and to read the file in one chunk. Seems it is not.
Roshan
how can i do that?
Get the input in str (string).
Use for loop and apply the logic I gave to encounter the dot.
Then you get the other part of the dot.
Низами
Hello. The question is related to (fstream). I am trying to write (string = "Hello") to (fstream). And I do it. But at the end of my text (HHHHHH .....) appears. I Use (Windows form). I do not understand what is the matter and what I am doing wrong. Google didn't help me much (((
Junaid
Hey every one can some one please share some source to learn about basics of stacks in c language
Igor🇺🇦
Hey every one can some one please share some source to learn about basics of stacks in c language
Are you talking about stack and heap memory or data structure?
Junaid
I want to know its working when push will happens and when pull
means want to clear my basic concepts
Igor🇺🇦
I want to know its working when push will happens and when pull
In memory or stack as data structure. These are different things
Junaid
In memory (Memory layout of C programming)
Igor🇺🇦
In memory (Memory layout of C programming)
https://gribblelab.org/CBootCamp/7_Memory_Stack_vs_Heap.html
Igor🇺🇦
Wikipedia as always has good enough explanation with links to more in-depth material https://en.wikipedia.org/wiki/Call_stack
Anonymous
hey guys
Anonymous
i need help
Anonymous
if(num = 0 && num < 0) how can i make it on switch
Phil
@alfonsephp you must use a proposition OR or XOR to make it work
Phil
and also there is a wrong check equality test
Anonymous
k thx
Phil
you add a single = and that affect to num the value num
Phil
what you wrote is :
if the affectation of zero to num is okay and if num is strictly under 0 then
beluga_hz
Good afternoon guys. Could you explain me in a practical way how to add C / C ++ libraries on Linux? I searched on Google and unfortunately I didn't understand much ... For example: if I want to use conio.h in a C ++ program, how should I add this library to the system so that the compiler can find it?
Anonymous
Good afternoon guys. Could you explain me in a practical way how to add C / C ++ libraries on Linux? I searched on Google and unfortunately I didn't understand much ... For example: if I want to use conio.h in a C ++ program, how should I add this library to the system so that the compiler can find it?
You don't want to use conio.h in C++
Alex
Good afternoon guys. Could you explain me in a practical way how to add C / C ++ libraries on Linux? I searched on Google and unfortunately I didn't understand much ... For example: if I want to use conio.h in a C ++ program, how should I add this library to the system so that the compiler can find it?
hello. usually use package manager to install library. apt in Debian/Ubuntu
أسامة
Good afternoon guys. Could you explain me in a practical way how to add C / C ++ libraries on Linux? I searched on Google and unfortunately I didn't understand much ... For example: if I want to use conio.h in a C ++ program, how should I add this library to the system so that the compiler can find it?
Cinio doesn't exist in linux
Use ncurses instead
beluga_hz
You don't want to use conio.h in C++
Actually I want, just for the "getch()" function
beluga_hz
But conio was an example
أسامة
Many students think getch and system("pause") as part of C/C++
beluga_hz
hello. usually use package manager to install library. apt in Debian/Ubuntu
How?
sudo apt install lib_name?
beluga_hz
Then i have to install the whole package, not just the single library
Alex
Then i have to install the whole package, not just the single library
usually whole package is just library