Write a function that produces output according to a format. Prototype: int _printf(const char *format, ...); Returns: the number of characters printed (excluding the null byte used to end output to strings) write output to stdout, the standard output stream format is a character string. The format string is composed of zero or more directives. See man 3 printf for more detail. You need to handle the following conversion specifiers: c s % You don’t have to reproduce the buffer handling of the C library printf function You don’t have to handle the flag characters You don’t have to handle field width You don’t have to handle precision You don’t have to handle the length modifiers

Or maybe copy printf function from libc source code

Not using normal print....you create your own _print

Yes

struct A { const std::string a = "dwda"; }; int main() { std::map<std::string, A> map; A a; map[a.a]=a; return 0; } The above code can not compile because the const will delete = operator. How can I define a readonly property without affecting the = operator like in other lauguages?

You can't do that. Think about what it means for operator= for such a class. If you need a class with read-only properties to be stored in a map, you have different alternatives 1) don't make the read-only property a const and expose only a getter to the public. As a class designer then, you should be careful not to change this property anywhere from within the methods of the class 2) you can make the properties const but in this case define your own overloaded operator= to ignore these properties and just return *this from within the method. Here you will have to worry about the semantics of your class if you have non readonly properties as well in the class. What does it then mean for only these non read only properties to be copied while ignoring the read only ones. 3) Instead of storing the objects of this class in the map store a pointer or reference to the objects of this class in the map. Here you will have to worry about the lifetime of the map and the contained objects and ensure there is no access to a destroyed object. 4) You dont store these objects in a map and instead design your own facade class which manages these objects and returns instances of them as required.

Hello guys just wondering how can I change the bool size in a struct which is by default 8 bits to higher bits like 16 or 32 bits does anyone have an idea?

DWORD GetModuleFileNameA( [in, optional] HMODULE hModule, [out] LPSTR lpFilename, [in] DWORD nSize ); what is [in] and [out] ??I cant understand

DWORD GetModuleFileNameA( [in, optional] HMODULE hModule, [out] LPSTR lpFilename, [in] DWORD nSize ); what is [in] and [out] ??I cant understand

[in] - you must provide input value [optional] - as you wish, for example it can be nullptr [out] - output buffer/value

u mean [out] will be return?

no, inside function in [out] function writes something, and then return you error code for example char name[256]; auto res = GetModuleFileNameA(nullptr, name, sizeof(name)); this returns path to your process res - return value from function (errorcode or successfull) [in, optional] nullptr - for this function it is current process or maybe handle for another process [out] name - function write here the path to process [in] sizeof(name) - size of name buffer

Why though?

well but you have your average declared as int, so it cannot store float

Hm, what is the easiest for C++ way to do inter-process communication with another app (written in Rust or go, haven't decided yet)? It needs to be a portable (Windows/Linux/Mac, but both processes are on the same machine always). Details: I want to make a separate app (that Rust or go part) that will spawn instances (processes) of my C++ app and send/receive data to/from these processes.

Hi. I have an array A of N length containing strings ni need number of good pairs of strings that can be formed

Hey I just started coding anyone tell me any good youtube channel where I start learning C++ as a complete beginner

Hey I just started coding anyone tell me any good youtube channel where I start learning C++ as a complete beginner

How can you send a file to someone, somehow like an app, once the person installs and open, it instantly sends a certain message to all contacts of the person I Which code is used there, please share, someone has done that to me

That seems like some malicious program

Do you have the code?,

Hey guys i have this code in a header file class SinglyLinkedLsit { private: struct Node{ int Value; int key; Node *next; }; Node *Head; }; And in it’s implementation file I’m trying to create a function that returns a pointer of type Node but my compiler keeps giving the error “Node does not name a type”. Can anyone help me stop this error? (I tried googling but I’m not getting similar issues as mine)

Do you have the code?,

How can someone read a code in an app?,

Usually with their eyes, but some people use screen readers.

As in?,

Usually with their eyes, but some people use screen readers.

How can someone read a code in an app?,

#include<bits/stdc++.h> using namespace std; void printf(int ind,vector<int> &ds,int arr[], int n){ if(ind == n){ for(auto it: ds){ cout << it <<""; } cout << endl; return; } ds.push_back(arr[ind]); printf(ind+1, ds, arr,n); ds.pop_back(); printf(ind+1, ds, arr,n); } int main(){ int arr[]={3,1,2}; int n=3; vector<int> ds; printf(0,ds,arr,n); return 0; } why am i not getting any output in this?

#include<bits/stdc++.h> using namespace std; void printf(int ind,vector<int> &ds,int arr[], int n){ if(ind == n){ for(auto it: ds){ cout << it <<""; } cout << endl; return; } ds.push_back(arr[ind]); printf(ind+1, ds, arr,n); ds.pop_back(); printf(ind+1, ds, arr,n); } int main(){ int arr[]={3,1,2}; int n=3; vector<int> ds; printf(0,ds,arr,n); return 0; } why am i not getting any output in this?

k11m1@k11book/tmp$ ./test 312 31 32 3 12 1 2

unsigned toUnicornProt(unsigned prot) { unsigned fres = UC_PROT_NONE; fres |= unsigned(bool(prot & UNIBOARD_PROT_READ)) * UC_PROT_READ; fres |= unsigned(bool(prot & UNIBOARD_PROT_WRITE)) * UC_PROT_WRITE; fres |= unsigned(bool(prot & UNIBOARD_PROT_EXEC)) * UC_PROT_EXEC; return fres; } Does this look like valid code? Am I right that bool will make sure the value is either 1 or 0?

instead of bool(smt) you could also do (smt) != 0

C++23

I warn you I don't know the answer to both of the following, but it may help much more experienced programmers in order to answer your question: 1) Read code as in "see the code behind the app"? 2) Read code as in "code reader app" like Kodek?

Depression, lack of motivation, disconnection to the reality and other stuff

hii

std::string BinRes::getAppLocation() { TCHAR szPathName[128]; std::string strPath; GetModuleFileName(NULL, szPathName, 128); strPath = szPathName; int slashPos = strPath.rfind('\\'); if(slashPos == strPath.npos) throw "Unable to get exe location"; strPath = strPath.substr(0, slashPos); return strPath; } strPath = szPathName; in this line I have this error: Error (active) E0349 no operator "=" matches these operands what should I do ? I am not familiar with winbase syntax:(

well you are trying to copy TCHAR* into std::string so... those are 2 different types so it complains (afaik)