General C++ Programming - C++ Forum

by HillaryZhang

issue with Aspose.Cells library for C++

Can someone please help me with my issue with Aspose.Cells library for C++? I was writing my first ...

[1 reply] : fatal error: boost/config/compiler/gcc.hpp: No such file or directory... (by fiji885)

by longdoan1511

Solving N-Queen problem using random picked queens

My idea is to store the position of the queens in an 1D array with queen =row and i = column, which...

[8 replies] Last: @TomCPP Thank you, I'll have a look (by longdoan1511)

by Devloper886

MMOSG development

Hi people! I'm with a problem. I want to create a mmosg so I'm going to use Allegro, SQLAPI ++, and ...

[3 replies] Last: Double posted - https://www.cplusplus.com/forum/windows/271609/ (by salem c)

by pnwadike99

i have too many files open?

I keep getting this error msg and I don't get why // open input file ifstream fin; // fin.o...

[2 replies] Last: you were right I defined codedMsg wrong. (by pnwadike99)

by volang

compare addresses - make sure one comes before the other

char str = "xz"; char * p1 = str; char * p2 = str + 1; Before I continue with another operat...

[10 replies] Last: #include <iostream> int main() { char str = "xz"; char * p... (by againtry)

by sameer224

Recursive function

The following recursive function has a return value of type unsigned int and two parameters of th...

[2 replies] Last: What is the return value of f1 with values 3 for parameter a and 6 fo... (by Hezigon)

by closed account jGAShbRD

return by address

why does for each (marked as //)in this code not work? i dont understand. is it because q is pointin...

[4 replies] Last: There is some confusion in the syntax between pointers and arrays. I ... (by kbw)

by Kaisha

converting from string to u8string

Is there a standard way (ie. apart from using something like WideCharToMultiByte()) to convert betwe...

[3 replies] Last: I think the answer is going to be to find a pro library that does this... (by jonnin)

by ErnstPeter

Pointer-Pointer-Array not working

Hello, i'm trying to set up a class, in which I can have an Array which contains names. The problem ...

[2 replies] Last: @OP You could also design and use your own list - a set of nodes/point... (by againtry)

by nenchi

Logical error cannot be found

/*I am using Visual Studio 2019 for my c++ coding and i cannot find the logical error to my coding. ...

[7 replies] Last: By the look of it and on reflection leap years aren't significant. (by againtry)

by volang

Setting values inside namespace/structs

Why is it possible to do following: namespace G { int a = 20; }; But not: namespac...

[2 replies] Last: In C99 (and C++20) you can do: timeval timeout = { .tv_sec = 20 }; ... (by kbw)

by ColBosky

How to google things and apply the answers to solve your own challenges?

Hello guys, The title says it all, I have noticed that things that I look for and apply take weeks ...

[2 replies] Last: In short, you have to think . You usually can't just cut & paste som... (by dhayden)

by julie2019

ModernCppStarter & PVS-Studio Static Code Analyzer

The ModernCppStarter team suggested a Pull Request for ModernCppStarter on introducing the PVS-Studi...

[no replies]

by JUANDENT

how to represent a monetary type in C++?

Hi, No, I don't think using double is enough because the decimal part is an approximation in doub...

[3 replies] Last: The thing about a fixed point representation is that you have to set a... (by helios)

by thmm

Return type of generic function

I want to write a generic function where I can specify the return type like float, double... but get...

[4 replies] Last: Thanks TwilightSpectre , that's even better. (by thmm)

by adam2016

[SDL] bugs with objects colliding

hey guys, I created two rectangle objects, I wanted to achieve random acceleration in random direct...

[9 replies] Last: do you think this is a viable solution? (by adam2016)

by MikeyBoy

crossword puzzle (1,2,3,4,5,6)

Which loop? You have several in your code, and I don't see any of them which looks like it has any ...

[102 replies] Last: I created a workspace for this project: https://hyom.slack.com/files/... (by oneidacharisse)

by oneidacharisse

random in class member function (1,2)

Hello what is the best place for srand(time(0)); in the main function ? at the beginning of the prog...

[22 replies] Last: I hope they add some novice-friendly APIs to <random> in a future ver... (by deleted account xyzzy)

by JUANDENT

what is a type with value semantics?

what is a type with value semantics? and how does it differ from other types? should types with val...

[4 replies] Last: thanks a lot Cubbi, great references!! (by JUANDENT)

by ErnstPeter

Random Number sorted and drawn as a sign

Hi, i'm trying to programm a game. For that i need random numbers sorted, so the biggest number is ...

[7 replies] Last: #include <iostream> #include <string> #include <sstream> #include <ct... (by lastchance)

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