Anonymous
If myclass1() and myclass2() share inheritance, I think you can do that, else use std::any and std::any_cast
Anonymous
Oh then you can... I think you just did it
Anonymous
Is your code not working
Anonymous
class MyClass1 : public Myclasses try this
Anonymous
Make it public
Anonymous
How did you fix it
Anonymous
Oh okay
Jagadeesh
how to fix this
class Solution{
public:
int MissingNumber(vector<int>& array, int n) {
sort(array.begin(),array.end());
int N=array.back(); //input 1,2,3,5
//output 4
vector<int> vec;
vec.assign(N,0);
for(int i=0;i<vec.size();i++){
vec[array[i]-1]++;
}
for(int i=0;i<vec.size();i++)
if(vec[i]==0)
return i+1;
}
};
this error coming——>Abort signal from abort(3) (SIGABRT)
Abort signal from abort(3) (SIGABRT)
Jasur Fozilov 🐳
Jagadeesh
geeksforgeeks
Anonymous
why gcount is returning 0?
Anonymous
std::fstream file;
file.open(filepath,std::ios::in|std::ios::binary);
std::string buffer;
std::cout << buffer << std::endl;
if(!file){running=false;}
else{
std::streamsize size = file.gcount();
file.clear();
file.seekg(0,file.beg);
std::cout << "size:" << size << std::endl;
file.read(&buffer[0],size);
std::cout << buffer << std::endl;
}
Shahadat Shanto
hello
PHATHUTSHEDZO
Im writting on it i want an easy way to attempt it
Dima
what is this code even
Dima
what are you trying to do with *a=1
Dima
yes, I mean why that way
Dima
nvm lol
klimi
What even is this
printf(" %d ", &A[i]);
klimi
Ah ic
Danya🔥
Do you think it's ok to allocate _Bool and use int*?
Danya🔥
This is very bad code and should not even compile
Danya🔥
It's like you write code in the 70s
Danya🔥
Why.. just why...
Danya🔥
Where do you learn to write such code?
Danya🔥
#cppbookguide
Danya🔥
Use these resources
Danya🔥
@Fo828 the only lesson you should learn is "DO NOT use stupid lessons from YouTube"
\Device\NUL
*(A + 0) = 1
\Device\NUL
You have no NULL handling
\Device\NUL
Accessing or dereferencing NULL pointer is Unknown Behaviour
Anonymous
std::fstream file;
file.open(filepath,std::ios::in|std::ios::binary);
std::string buffer;
std::cout << buffer << std::endl;
if(!file){running=false;}
else{
std::streamsize size = file.gcount();
file.clear();
file.seekg(0,file.beg);
std::cout << "size:" << size << std::endl;
file.read(&buffer[0],size);
std::cout << buffer << std::endl;
}
You open a file in "in" mode. And you have not read anything yet. So what do you think gcount should return?
Anonymous
You should not use %d for printing a pointer. You should use the format specifier %p
Amin
Hi, how can i call back value in linked list function in another function. Example, i collect data from user in addToList(Node *head); and i want to use the data in reverse function. Please anyone help me
Spirit
Do you think it's ok to allocate _Bool and use int*?
bit pack some bools into a linked list of structs containing ints ints keeping track of all allocated and unallocated bools, keep track of all memory locations and references to their variable names
A.
Hi
I want help to sort arrays from mimum to maximum
I still bignner
A.
Can u explain
Anonymous
What is function overloading in c++?
Bobur
Anonymous
Is it so hard to Google? Or to read a book?
Which book? I am doing object oriented programming in c++
Anonymous
Ok I will do it...... thanks you all
Ravindu Ishara
So I am creating a program that calculates the consumption of a car's gasoline and record the odometer with each trip. That part I already have a plan for it, however I ran into a problem where I use a 2D array to hold distances, from and to, in 5 different locations. I am learning headers and I do not know how to declare 2D arrays in a header.
\Device\NUL
*Confused nick young
Vlad
So I am creating a program that calculates the consumption of a car's gasoline and record the odometer with each trip. That part I already have a plan for it, however I ran into a problem where I use a 2D array to hold distances, from and to, in 5 different locations. I am learning headers and I do not know how to declare 2D arrays in a header.
Do you want to declare global 2d array or what?
Vlad
https://godbolt.org/z/bxbs3oYYT
Vlad
I would have done something akin to this
Vlad
Pay attention to the inline in an array declaration
A
Anybody have experience on sending cookies to libwebsocket for user Authorization
A
Using Qt Cpp
Do
is this possible in C for allocate, or map a specific memory region for application?
Amin
void push(int data)
{
struct Node* newNode;
newNode = malloc(sizeof(newNode)); //here the error
if(newNode == NULL)
{
cout<<"Stack overflow ";
exit(1);
}
newNode->data = data;
newNode->link = NULL;
newNode->link = top;
top = newNode;
}
the error is : invalid conversion from void to node
Amin
hi can someone help me with this
Captain
void push(int data)
{
struct Node* newNode;
newNode = malloc(sizeof(newNode)); //here the error
if(newNode == NULL)
{
cout<<"Stack overflow ";
exit(1);
}
newNode->data = data;
newNode->link = NULL;
newNode->link = top;
top = newNode;
}
the error is : invalid conversion from void to node
Malloc returns void pointer cast it to struct Node
Captain
Like this struct Node*(malloc())
Pavel
No
If it's in header you can do
inline std::vector<std::vector<int>> distances;
as one of possible variants of declaring it
Leovan
How to find library (glm in my case) which i use in my project on another computer. Idk where user can store it, but I know its installed.
Im tried using CMake but unsuccessfully.
And on Windows not exist /usr/inlcude with all libraries like on Linux.
Is this generally my problem or my project user have to set up environment variables with the libraries I need?
Anonymous
How can windows have Linux libraries 😂,lol
touhou
How to find library (glm in my case) which i use in my project on another computer. Idk where user can store it, but I know its installed.
Im tried using CMake but unsuccessfully.
And on Windows not exist /usr/inlcude with all libraries like on Linux.
Is this generally my problem or my project user have to set up environment variables with the libraries I need?
Are those POSIX libraries or 3rd party libraries ?
Anonymous
OK
Vlad
How to find library (glm in my case) which i use in my project on another computer. Idk where user can store it, but I know its installed.
Im tried using CMake but unsuccessfully.
And on Windows not exist /usr/inlcude with all libraries like on Linux.
Is this generally my problem or my project user have to set up environment variables with the libraries I need?
glm is header only, just distribute it alongside
Vlad
Also there are package managers like conan and vcpkg that do what you just said
\Device\NUL
How can windows have Linux libraries 😂,lol
MinGW and CygWIN allows you to use POSIX headers on windows
Anonymous
😂Mingw and Cygwin，I only used them to configure the vscode environment
Anonymous
but I'm almost on Linux now. I think the interface of Linux is very comfortable
𝕷𝖔𝖗𝖊𝖓𝖟𝖔
Hi guys, when I do an operation like this:
#define PAGE_SIZE (4096);
char *buff= mmap(NULL, 3*PAGE_SIZE,PROT_READ|PROT_WRITE,MAP_SHARED,fd,0);
Does sizeof(buff) == 3*PAGE_SIZE?