General C++ Programming - March 2018 (Page 8)

Need Help with finding the min value in a 2d array
 
Sorry. The issue is when we enter the values into the array, the highest usually comes out right. But the lowest comes out as zero. Updated #includ...
[4 replies] Last: Indeed. This is what you do in printPrices() to visit every element: ... (by keskiverto)
by typi8
help with functions and void?
 
I am a newbie at this and I am confused on how to go on to solve these two questions. Any help and walkthroughs in explaining on how to do this will be nice. ...
[1 reply] : Start with something simpler. What is the output here? int six_(int i... (by keskiverto)
by typi8
Help With Functions
 
Hello I am a newbie at c++ and I am struggling on this. I have a text file as so below: Janet 90 23 Red Bill 80 25 Blue Greg 91 10 Red Kyle 50 30 Yellow ...
[6 replies] Last: Thank you to everyone who helped! I appreciate it very much. (by typi8)
Help with this :)
 
If you get a ticket for speeding, your fine is based on how much your speed exceeded the speed limit by. Suppose the fine is based on the following schedule: ...
[1 reply] : what is the question ? (by SamuelAdams)
by jbohol
C++ Compilers
 
Hello Masters, Greetings! I'm reading the comparison between c++ and c#, and i found that c++ will let you do almost anything provided the syntax is right...
[8 replies] Last: writing to ram is a relic from a very long time ago. Nothing lets you... (by jonnin)
std::allocator
 
hey guys I had a thread that uses the same code not so long ago,this code is a strong example of what I'm trying to ask so I'll re-use it. I have done some r...
[5 replies] Last: and apart from writing containers,when would you need to allocate memo... (by adam2016)
FEM sparse matrix assembly c++
 
HI I have C++ FEM code wrote long time ago with its own functions. Now, i am trying to upgrade this code to be faster. i am trying to convert the existing line...
[no replies]
Please help with this. How do I write the code for outputting the mg caffeine column?
 
Write a program to prompt the user and input the number of cups of coffee consumed. Given that each cup contains 130 mg of caffeine, compute and output the amou...
[3 replies] Last: I've figured it out :) /* Write a program to prompt the user and inp... (by tracyvo105)
translate a phrase to Pig Latin
 
I've already completed translating a word into pig latin, but now I need suggestions as to how I should go about converting the code to translate a whole senten...
[1 reply] : Please edit your post and put [co de] and [/c ode] around your c... (by Ganado)
by Jmac21
Use Fork() to create Child process that use separate threads
 
Hey guys, How can I create a fork()/Child thread process for each computation in my program: Average, median, and standard deviation of the grade population, d...
[2 replies] Last: the main function, the child process uses separate threads to compute ... (by Jmac21)
std::vector push_back
 
Hey guys I am quite confused as to why this is happening so I looked up the arguments for std::vector.push_back() and it accepts a const reference of any ...
[8 replies] Last: val is passed by reference for the same reason that the argument to pu... (by Peter87)
the Kernel
 
Hey guys I'm not sure if this belongs in the Windows or Linux sub forums but since I'm talking about both OS's and many more I guess general is the best place f...
[4 replies] Last: you need to directly access the instuction pointer to point to the ke... (by dhayden)
Fast file reading in C++
 
Hello,in my country there is a pretty popular file reading algorithm in the olympiad, that im going to present here,but I dont really understand it,i would be r...
[11 replies] Last: fread() itself is buffered so you're actually making two copies. You m... (by dhayden)
C++ Graphics for easy understanding
 
Okay, so in my programming adventure, changing different languages, trying some new game makers or so, i'm stuck on this: "Why when i try making something graph...
[5 replies] Last: Is that Visual Studio? If so are you reading this? https://www.sfml-de... (by Ganado)
by DiaZie
C2679 error
 
template<class T> class XVar { private: T m_X; public: XVar(T x) { m_X = x; } T GetXValue() { return m_X; } }; template<class T> class ...
[6 replies] Last: m_ppXPoints[m_Pos++][m_Pos++] = *pInput; Wouldn't post-incrementing... (by doug4)
by stav
why not make everything unique_ptr ?
 
Hi, i just learned about smart pointers and i was wondering: Is it bad to make all members of a class (or anywhere for that matter) unique_ptr ? as long as the ...
[7 replies] Last: Good for them. I like to avoid the situation of needing to pass around... (by Repeater)
void pointers
 
Hey guys believe it or not I am now only coming to grips with function pointers,anyway I wrote a simple program that uses the sqort function that obviously so...
[4 replies] Last: thanks Ganado that makes sense :) (by adam2016)
question on r value reference
 
Hi, Could someone explain? For the following statement, why void foo(X const &) can be called on both r and l value, but void foo(X&) cannot. I faintly reme...
[4 replies] Last: thanks (by chrisben)
by Mk87
An alternative way for if-else in the following piece of code
 
I have the following piece of code which is a part of my project if the number of syndromes will increase in each part of my project and with increasing the num...
[10 replies] Last: Call map<int,int> M = setMap( parityBits ); to set up a mapping f... (by lastchance)
Function of void print and its capacity in this code.
 
Hello, i was given a project to do on c++, i was supposed to write a cpp code that would reverse a *char element(word) leaving the last letter as it is, say, "1...
[6 replies] Last: Alright, let me get this straight, i haven been given this project to ... (by azizguliyev)
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