General C++ Programming - August 2017 (Page 3)

by tario
error: invalid use of non-static member function
 
I keep getting the compile error: vclPCG.C: In member function ‘virtual Foam::solverPerformance...
[1 reply] : ¿is that openFoam? ¿what part is your code? I need to see more cont... (by ne555)
UVa 562
 
Hi, I've coded the solution to UVa 562: https://uva.onlinejudge.org/index.php?option=com_onlinejudg...
[1 reply] : Alas, I hate that site. It is broken in too many ways and, even though... (by Duthomhas)
if statement inside for loop not working
 
The output of the below code should be the numbers between 21 and 29. But the output is numbers betw...
[1 reply] : if(20<i<30) This is not the proper synthax. Should be if (i > 20 && ... (by Thomas1965)
How to clear C++ console?
 
Project is Calculator. If user enters the input 1 + 1 = 2 and if user presses any key again, then co...
[8 replies] Last: /* --- Function: void my_clearscrn(void) --- */ void my_clearscrn(v... (by pivot)
Horizontal, vertical lines & their alignment
 
Hello, I succeeded in getting to show all 255 ASCII symbols in a table, but have a couple questions....
[17 replies] Last: Thanks lastchance for explaining! Also thanks Cobbi for finding a way ... (by aurimas13)
constructor & destructor
 
Hi guys, Please help me I need a program any program which includes default constructor, copy const...
[1 reply] : We are not a code writing service. If you want to learn programming, m... (by Thomas1965)
Code::blocks calculator, help me fix this.
 
Full code here, #include <iostream> #include <windows.h> using namespace std; int choice; do...
[6 replies] Last: But now, can how can I make it like that? If user calculates the numbe... (by Kristen)
to get the specific results at the different time steps.
 
so i need a bit of guidance. i have a program that outputs results in several time steps in a text f...
[7 replies] Last: you can also install cygwin and cut the windows path to see the execut... (by jonnin)
setting up SDL2 with codeblocks
 
Hi, I am trying to learn to use the SDL2 using the tutorials at, http://lazyfoo.net/tutorials/SDL/...
[3 replies] Last: One option would be to create a project from scratch and save it as a... (by Thomas1965)
by Borneq
PDCurses and C++
 
I try using PDCurses to write Windows/Linux program. While using PDCurses in Windows in .C programs...
[1 reply] : Solution: instead of http://gnuwin32.sourceforge.net/packages/pdcurses... (by Borneq)
Comparision of ofstream object and double/integer variable in If statement
 
I am writing a program in C++ in which I need the comparsion of ofstream object with a double/int va...
[6 replies] Last: Thanks, it worked. (by Saeed Ullah)
by Kip
Initialization of base class in derived's copy constructor initialization list
 
Compiling the following minimal.cpp with g++ 6.3.0 like so: $ g++ -Wall -Werror=extra minimal.c...
[3 replies] Last: Thanks folks. I suspected that it was a best practise to invoke the ba... (by Kip)
Libraries vs applications in C++
 
Scott Meyers said in one of his talks at CppCon sth. like "C++ is great for libraries but not for ap...
[2 replies] Last: I would say it is the portability issue. A library with no direct I/O... (by jonnin)
by stav
GUI library other than QT?
 
What GUI library do you guys use when creating GUIs with UI elements and what not? i've been thinki...
[1 reply] : It is still free. https://www.qt.io/download-open-source/ You don't ... (by Moschops)
by elsa
How to double numeric value from a string read from console
 
Here is the code in question: it can read from the console and parse the string, but I want it to pa...
[4 replies] Last: Avoid using a custom regular expression to parse floating point number... (by JLBorges)
n natural numbers
 
asaalam o alaikum frndzz.. what is the c program for first n natural numbers???
[6 replies] Last: Glad you got it! Loops are one of the most important control construc... (by Duthomhas)
HELP PLEASE!!!!
 
The file extracredit.txt contains a list of integers. Each integer is 4 digits long. (Range would b...
[3 replies] Last: Also, tae a look at these 2 functions, the app function adds 0 or 1 to... (by masecla33)
Edit data with .txt file using ID
 
Hi, i just started C++ 2 days ago and still learning how to code. How to do edit database by using I...
[6 replies] Last: the addSports() function is on the right track but there are a few sim... (by closed account 48T7M4Gy)
Undesired output when reading a file
 
Hi Guys, I am reading from a file and printing the content on the console. But my output contains b...
[2 replies] Last: fgets() will treat the newline character as part of the line. http://w... (by Chervil)
How to declare a pointer to a fucntion which (function's) return type can be different?
 
I have a class with a member data which is a pointer to a double function: //.h file clas...
[6 replies] Last: The problem runs deeper than that: you are basically asking the compil... (by Duthomhas)
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