General C++ Programming - C++ Forum (Page 2)

by wc skya

same function name different signature

Why the following code does not compile in g++? struct A { int foo(int x) { return x *...

[3 replies] Last: Can also specify to use foo() in A explicitly: struct A { int foo(... (by seeplus)

by LukeProducts

output read string between getchar() calls

Hello mates, i dont understand what my code is doning and why. #include <iostream> int main() {...

[8 replies] Last: if i replace getchar() with getch() from conio.h, i dont get any key ... (by seeplus)

by Cplusc

if condition for class constructor

I'm trying to have a class constructor in an if condition but the compiler dos not accept that. here...

[2 replies] Last: Ops,you're right. I should've used macro instead of if condition.Thank... (by Cplusc)

by wk1999

asio coroutine timer

I am being confused the asio::timer coroutine does not work if I modify the timer in another corouti...

[2 replies] Last: The timer will expire in function bar: timer.expires_after(asio::chron... (by wk1999)

by Typehello

std::string to std::ifstream

I want std::string to be converted to std::ifstream Here is the code written, but unfortunately n...

[2 replies] Last: This will create the required vector, display the file names as the ve... (by seeplus)

by seeplus

main() trailing return type

int main() { } with Clang produces the warning message: <source>:1:5: warning: use a...

[13 replies] Last: where are C++ students going to get people to do their homework for t... (by seeplus)

by ruzip

Get the last argument of varying argument macro function

Is it possible to get the last argument of a macro function with varying argument count Somethi...

[2 replies] Last: I think you want to move the last element to the front, right? e.g., ... (by mbozzi)

by PressClass

Permutation of withdrawing 2 balls out of 5

I hope if there is someone have the time to read and help me to solve this problem. I stopped doing ...

[10 replies] Last: Heh, it isn't as if someone looking for help in the past hasn't genera... (by George P)

by Worldtreeboy

Upcasting and downcasting

Derived d1; Base* BasePtr = &d1; Base& BaseRef = d1; Derived* d2 = new Derived Base* BasePtr2...

[5 replies] Last: Thank you for clarifying my doubts! (by Worldtreeboy)

by frek

CTAD and concepts in C++20

Hi all, hope you're all very good. Stroustrup says: "Whenever possible use named concepts (e.g., st...

[2 replies] Last: So to answer my questions: 1) We had better use standard concepts not ... (by frek)

by DLcode20

Hit a wall trying to implement radix sort

So I have been tasked with implementing a radix sort for school, and while the professor left commen...

[2 replies] Last: As this is now ticked, has the problem been solved? (by seeplus)

by ruzip

C Nested Linked list using dot for members

Is it possible to have a nested linked list in C using dot operator like structs to access members...

[8 replies] Last: @Keskiverto @GeorgeP Yes something like that. I'd prefer the dot typ... (by ruzip)

by Hawlong

remove element from vector <struct>

Hell all , Please how can remove element from this vector [parr1 ] #include <iostream> #include <...

[6 replies] Last: And should you ever need it C++20 makes it possible to reverse a range... (by George P)

by ruzip

Check if function argument is a string

How do I check if an arg extracted from va_arg inside a function is a string? My function has var...

[6 replies] Last: Thanks for the input guys. I'm not really leaning into using variadic... (by ruzip)

by ruzip

C Macro Filter String literals in arguments

Is it possible to do a parse or filter in C a macro for example: FILTER(Var, "text", somevar, foo...

[7 replies] Last: The problem is that string literals are typically treated as being sel... (by mbozzi)

by ayoesquire

implementation of simple class for raspberry pi pwm blink program (Embedded Programming) (1,2)

Hi guys, Please, could you help me with this? I have been working on this simple project to make th...

[35 replies] Last: @seeplus: Thanks! :) (by ayoesquire)

by ruzip

Macro to replace comma in #define

I'm trying to do some C macro experiment where comma "," is replaced with a keyword like ADD Exam...

[11 replies] Last: Thanks mbozzi , it works great! problem solved 👍 I did try someth... (by ruzip)

by Cplusc

shared pointer

I'm trying to use shared pointer in my code as follows, enum BoundaryType { PressureInlet, Pres...

[9 replies] Last: thanks for your help. (by Cplusc)

by ruzip

Parsing Include Files Recursively

I need a C function that I can parse files recursively like a tree inside a file with a pattern impo...

[19 replies] Last: Thanks seeplus ! (by ruzip)

by BuckedUp

Function to output all combinations that give a certain value

I have two vectors _A and _B and an equation (x-y)/2, where the x is vector _A and y is _B. So for e...

[3 replies] Last: Not sure that I agree with your model output: #include <iostream> #i... (by lastchance)

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