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Beginners - August 2017 (Page 15)

Hi. Using private data type is not clear for me, for example I want to make a class, it has some private variables in it so as to I can control the users if t...

[4 replies] Last: Thank you. I got it. (by omer123)

by mikeluna

Else without a previous if

Hi! How are you? Im starting on C++ and I had this problem before and it was because of the braces, I used them this time but it keeps telling me that i have el...

[5 replies] Last: Use and editor or IDE that will do automatic indenting. That can reall... (by dhayden)

by omer123

How do programmers know what's inside my custom library?

After I created a graphic library for example and then if I want to distribute it to other people to use, how do they know how to use my library and what's insi...

[5 replies] Last: Thanks friends for your answers. (by omer123)

by ivar5000

Finding multiple peaks from a vector

Can anyone help me with finding multiple peaks given a vector with amplitudes? I need to use the first difference as well as the smooth difference(median of ...

[7 replies] Last: @lastchance - thank you for your help. I will try smoothing out the or... (by ivar5000)

by shah954

C++ LUDO GAME HELP

I HAVE TRIED TO WRITE A BOARD GAME (LUDO) IN GUI USING C++ ALTHOUGH ITS NOT WORKING AT ALL MANY ERRORS WHEN I USED CODE BLOCKS KINDLY SOMEONE HELP htt...

[no replies]

by DirtyBlasion

Matreix Class not working

Hi I'm new to OpenGL(idk if I have already 4 months of learning it it's called new), and I have passed successfully my matrix to the shader, my matrix was an te...

[6 replies] Last: Solved! All I had to do was to make operator to return a reference to ... (by DirtyBlasion)

by lifeisgood

Function not returning what I expected

Hi, I have the following function: /* proposal distribution */ void dist(double paraest ,double sigscale ,int npara){ paraest =0.5; paraest =0.5; ...

[18 replies] Last: @jlb: thanks for the info! @Enoizat: yes, you did mention in your ear... (by lifeisgood)

by rajhansk

what is the use of vector::get_allocator?

What is the use of get_allocator ?? I've read a program from this site, but I couldn't understand the 15th line. What is myvector.get_allocator().construct(&p ,...

[2 replies] Last: Thank you for the reply :) (by rajhansk)

by TheArk

do while loop fail

Any Idea why this won't compile? Error message says 72:1: error: expected unqualified-id before 'do' I don't know what is wrong in my do while loop #incl...

[2 replies] Last: See also duplicate post: http://www.cplusplus.com/forum/general/219747... (by Chervil)

by rajhansk

How do I proceed?

I have been learning c/c++ for many months and I am still beginner, but I want to go to more advanced level. My question is how do I approach to the next lev...

[6 replies] Last: @boost lexical cast Command line tool idea is cool, how do I proceed ... (by rajhansk)

by keh k lenge

Lambda capture

If there is a lambda capture [=, &var] does it mean that it can access all the variables in the scope in which it is defined by value except for var? Also does ...

[4 replies] Last: Uh, I see what you mean. Thanks a lot for your kind explanation, mbozz... (by Enoizat)

by puertas12

Problems with the default constructor attributes initialisation

This is my code: #include <iostream> using namespace std; class dumb_array { int mSize; int* mArray; public: //default constructor dumb_array(int ...

[10 replies] Last: Well, don't std::string and std::vector (just for example) by default... (by Thomas1965)

by puertas12

When to use try{} catch{<exeption>} block)?

I am reading information about exception handling and I wonder when should I write the try{} catch{<exception>} block. Until know I only use it when the IDE s...

[4 replies] Last: [quote=puertas12]I wonder when should I write the try{} catch{<excepti... (by Cubbi)

by ExSanity

Reallocating char* array size

I am trying to have an array of strings, but I can't quite figure out how I'd allocate an array of strings. What I want to do: char **wordlist, **respons...

[5 replies] Last: Jumping on the bandwagon, here's a solution where wordlist and respons... (by dhayden)

by puertas12

Overload + operator to concatenate strings using strcat() <cstring>

- Experts, I am trying to overload the "+" operator to concatenate string using the function strcat(string dest, string src). Looking at the signature of strca...

[9 replies] Last: Thanks @Cubbi (by puertas12)

by Billket

expected unqualified-id before 'for'

Hello! I have this code (I put just a part of it): class TMTrackAnalyzer : public edm::EDAnalyzer { public: # declare public stuff here ...

[5 replies] Last: I don't understand you ¿what's the purpose of the loop? > map< Obj... (by ne555)

by gunman353

GetAsyncKeyState() during a Sleep() does not register immediately

In the program I am writing when I hit the 'escape' key, I want it to exit immediately. Currently it waits until the end of the sleep statement before registeri...

[4 replies] Last: A rather clunky approach using Sleep(). Here the escape key is tested... (by Chervil)

by davBams

elseif shorthand

Hello, I know there is a shorthand for if and else conditions, it is as follows A = (B<C)? B:C; What about elseif? the condition appears to only...

[3 replies] Last: Thanks a lot. @Zhuge and @mbozzi Now I know better. David. (by davBams)

by zaratustra

Declaring an array inside function

hello, I have recently tried to create a function that sums two different arrays. For this, inside the function, I need to declare a double pointer (double **po...

[7 replies] Last: Thanks for the replies guys, I think I managed to overcome the confuss... (by zaratustra)

by wsme

Terminal Crashing on Switch statement

Hey all, Wanted to make a guessing game based on a random number to be guessed by a player. I was able to compile successfully, but the terminal would crash aft...

[8 replies] Last: A simple way to implement jonnin's idea. #ifdef _DEBUG const unsigne... (by Thomas1965)

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