Njabu
Oh thanks, I was asking maybe someone can help me, I don't have any Idea
Njabu
Thanks , I won't send again
Sandeep
what you wrote is the same as this
Why should the size of a stack array be specified at compile time??
сумбула
size_t solve(size_t a, size_t b) {
size_t x = ~(a ^ b);
return x & ~(x - 1);
}
thank u it passed all tests🥳
Hermann
How serialize and deserialize my std deque without boost?
сумбула
Do not reply out of context for bringing attention.
can you add it to the rules, please?
why is it bothering you?
Anonymous
/warn @Den_dan1 PMing
Andrew
how to get the current OS at runtime in C++, something like if (os == "linux") { do this}
Anonymous
Anonymous
If you can compile-time
Andrew
i have to generate some files based on the current os
сумбула
is there are any standard function in c++ that converts binary to decimal or vice versa?
Anonymous
is there are any standard function in c++ that converts binary to decimal or vice versa?
Binary to decimal what?
сумбула
like in binary 00001100 is equal to 12 in decimal
сумбула
thank you
Symphorien
Hi everyone I hope you're all doing well
Shadow
Good notes for DSA c++?
Shadow
Any recommendations?
armandofsanchez
how to get the current OS at runtime in C++, something like if (os == "linux") { do this}
Maybe try a system command to call de os (for example system(uname))
Anonymous
i have to generate some files based on the current os
You can use macro constant available for operating systems
Like _WIN32
Anonymous
When I say: classname variable ....inside that class, that means what ?!
Anonymous
When I say: classname variable ....inside that class, that means what ?!
That doesn't make sense
Talula
When I say: classname variable ....inside that class, that means what ?!
It's a variable inside the class.
バレンタインがいない柴（食用不可）
Hi 🙋🏻♂️
バレンタインがいない柴（食用不可）
Im just to say hi here :P
Vaishnav
Anyone with c language notes and study materials
Hermann
how serialize and deserialize my deque<Base>>??
Hermann
https://pastebin.com/CWyMJLgH
Pavel
https://pastebin.com/CWyMJLgH
The simplest way, you can the write size of the deque to the stream and then serialize each element (as space separated values for example, if your string value can't contain spaces).
When deserializing, first read the size, then read as many elements as the size
Marshall
Hi everyone!
I'm a newbie. Can someone explain to me how in main function classes work?
Thanks in advance!
#include <iostream>
#include <cassert>
using namespace std;
class Drob
{
int m_numerator;
int m_denominatar;
public:
//Конструктоор по умольчанию
Drob(int numerator = 0, int denominator = 1) :
m_numerator{ numerator }, m_denominatar{ denominator }
{
//assert - обрабатывает ошибки
assert(denominator != 0);
}
//Конструктор копирование
Drob(const Drob& copy) :
m_numerator(copy.m_numerator), m_denominatar{ copy.m_denominatar }
{
//Нет необходимости выполнять проверку denominator здесь, так как
//эта проверка уже осуществлена в конструкторе по умольчанию
cout << "Copy constructor worked here!\n";//Просто показать, что это работает
}
friend ostream& operator<<(ostream& out, const Drob& d1);
int getNumerator() { return m_numerator; }
void setNumerator(int numerator) { m_numerator = numerator; }
};
ostream& operator<<(ostream& out, const Drob& d1)
{
out << d1.m_numerator << "/" << d1.m_numerator;
return out;
}
Drob makeNegative(Drob d)
{
d.setNumerator(-d.getNumerator());
return d;
}
int main()
{
cout << makeNegative(7);//передаем целочисленное значение
return 0;
}
Marshall
I roughly know how it works.
I just wanted to go deeper into this process
Anonymous
Anyone need help with c Questions ?
Pavel
I roughly know how it works.
I just wanted to go deeper into this process
Well, what part of the code is interesting for you? because otherwise it's a lot to explain (and probably the things that you already know)
Pavel
Hi everyone!
I'm a newbie. Can someone explain to me how in main function classes work?
Thanks in advance!
#include <iostream>
#include <cassert>
using namespace std;
class Drob
{
int m_numerator;
int m_denominatar;
public:
//Конструктоор по умольчанию
Drob(int numerator = 0, int denominator = 1) :
m_numerator{ numerator }, m_denominatar{ denominator }
{
//assert - обрабатывает ошибки
assert(denominator != 0);
}
//Конструктор копирование
Drob(const Drob& copy) :
m_numerator(copy.m_numerator), m_denominatar{ copy.m_denominatar }
{
//Нет необходимости выполнять проверку denominator здесь, так как
//эта проверка уже осуществлена в конструкторе по умольчанию
cout << "Copy constructor worked here!\n";//Просто показать, что это работает
}
friend ostream& operator<<(ostream& out, const Drob& d1);
int getNumerator() { return m_numerator; }
void setNumerator(int numerator) { m_numerator = numerator; }
};
ostream& operator<<(ostream& out, const Drob& d1)
{
out << d1.m_numerator << "/" << d1.m_numerator;
return out;
}
Drob makeNegative(Drob d)
{
d.setNumerator(-d.getNumerator());
return d;
}
int main()
{
cout << makeNegative(7);//передаем целочисленное значение
return 0;
}
Two things that I would like to mention, the explicit copy constructor is not needed here. If it wasn't declared it will be generated anyway, and probably more efficiently.
Implicit constructors are usually bad design choices, they may look handy but there are all kinds of weird bugs that follow.
Marshall
I'm interested. How does it work function Drob!
Pavel
I'm interested. How does it work function Drob!
Drob is a class, it has an explicit constructor from int.
You call makeNegative passing an int, int being implicitly converted to Drob.
Pavel
Then there are functions called on it, then it being returned then operator << is being called on it to print it to cout
Marshall
Senju
Does any one has competitive programming 4
Book 1 and 2
Senju
Pls DM
It would be of great help...
Thanks
Anonymous
Are there anyone use atom for c programming?
Earl B
But am switching to neovim
Earl B
Why haven't you asked already? Just ask the question
Anonymous
I'm getting an error while running the c programming code
Atropos
Anonymous
Yes I have a gcc
Anonymous
I'm getting an error while running the c programming code
Atom is a text editor
He has nothing to do with running your code
Anonymous
Provide WHOLE information to get help
Anonymous
I did it but there are an error
Anonymous
The file argüman must be of type string
Joo
Read a sequence of words from input. Use Quit as a word that terminates the input. Print
the words in the order they were entered.
Joo
Please can someone help me with this question?
Joo
#include <iostream>
using namespace std;
int main(){
int a;
char s[a][10];
string sample = "Quit";
for(int i=0;i<a;i++){
cin»s[i];
if(s[i]==sample){
a=i;
}
}
for(int b=0;b<a;b++){
cout«s[b]«" ";
}
cout«endl;
return 0;
}
Joo
#include <iostream>
using namespace std;
int main(){
int a;
char s[a][10];
string sample = "Quit";
for(int i=0;i<a;i++){
cin»s[i];
if(s[i]==sample){
a=i;
}
}
for(int b=0;b<a;b++){
cout«s[b]«" ";
}
cout«endl;
return 0;
}
This is the code but it isnt working well; the array is implemented after the first word
Anonymous
#include <iostream>
using namespace std;
int main(){
int a;
char s[a][10];
string sample = "Quit";
for(int i=0;i<a;i++){
cin»s[i];
if(s[i]==sample){
a=i;
}
}
for(int b=0;b<a;b++){
cout«s[b]«" ";
}
cout«endl;
return 0;
}
you are using C++. use std::array if you know the size of the array, std::vector otherwise
Joo
you are using C++. use std::array if you know the size of the array, std::vector otherwise
I dont know how to use them
Joo
Im a beginner
Anonymous
#include <iostream>
using namespace std;
int main(){
int a;
char s[a][10];
string sample = "Quit";
for(int i=0;i<a;i++){
cin»s[i];
if(s[i]==sample){
a=i;
}
}
for(int b=0;b<a;b++){
cout«s[b]«" ";
}
cout«endl;
return 0;
}
also, please remove using namespace std; and bring only the names you will actually use in the program, preferably inside the function and not in the global namespace.
Anonymous
I dont know how to use them
follow a different book/tutorial. any good modern C++ tutorial will introduce you to the containers instead of having you write shit code. see pinned message.
Joo
Ooh ok