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General C++ Programming - December 2020

by mecacool
RNC Decompressor issue dumping file from input file
 
Hey, I have successfully compiled this code here-> https://lubiki.keeperklan.com/dk1_docs/libadikted/dernc_8c-source.html But, when I run my executable conso...
[12 replies] Last: Alright, thanks for the info I will take a look into it. (by mecacool)
by Ralejoe John
C++ code
 
please help me with the code below.. the program should be able to perform the below 8 tasks from add student record to exit.. record should be recorded using ...
[6 replies] Last: As it's New Year, for your starter for 10 (UK quiz program) a possible... (by seeplus)
by Ralejoe John
C++ code
 
Please help me with the code below.. the program should be able to perform the below 8 tasks from add student record to exit.. record should be recorded using ...
[3 replies] Last: What you want is the 'Jobs' section. Easy mistake to make, it happens ... (by Computergeek01)
by JUANDENT
lambda expression always returns a prvalue, hence dangling reference?
 
Hi, I found the following in cppreference.com in the documentation for std::function: Care should be taken when a std::function whose result type is a refe...
[14 replies] Last: Thanks you two, didn't know it was explicitly stated as an exception t... (by Ganado)
by mecacool
How to dump a file stored at memory offset
 
Hey, any suggestions on how to dump a file called t3.gif that is stored in a tex.lss at a offset of 0x54dc1 in memory. Any, code examples or libs I can use Ive...
[3 replies] Last: Academically that's correct. I'd suggest nirsoft for this otherwise: h... (by Computergeek01)
by scorp08
Combination of point coordinates from limit values
 
Hello I have an lower and upper limit values of n dimension coordinate system, like [2,5,8]- lower and [6,12,16] - upper for 3 dim. I want to get points from...
[12 replies] Last: It looks like half then half then half . . . either way. #include... (by oggin)
by questextractor
Compiling Trevisan's Extractor
 
Hello, I am trying to compile this library: https://github.com/jdbancal/libtrevisan I installed everything without error and I could make for the code....
[7 replies] Last: Here I put the link for sample input https://easyupload.io/m/zhe9xm ... (by questextractor)
by George P
How to learn programming as a newbie?
 
Decide on what programming language you want to learn first. Then choose your programming tools. C++ is not a bad choice, though it does have a steep learning...
[2 replies] Last: I do not know whether we are allowed to mention specifics, but the bes... (by IcterusGalbula)
by SirEnder125
Trying to make custom "std::getline()" function (HELP!)
 
Hello. First off, I'd like to apologize to anyone I may have offended here. Sorry for being mad and maybe rude. :P Also, I was trying to make a custom version ...
[10 replies] Last: You should use the get method instead of operator>> since you obvious... (by seeplus)
by MakeItGreatAgain
How to generate .dll files of 3rdparties to build folder with CMakelists.txt
 
Hello, I am trying to compile my test project with CMakeLists.txt in which several 3rd parties are specified with find_package. I use list(append LIBRARIES ...
[no replies]
by JOoji11
Gode that covers basics
 
Hi just getting into coding, can someone create or show me a code that covers basics so i can have reference to look back on. I would much appreciate the help. ...
[4 replies] Last: https://www.learncpp.com/cpp-tutorial/basic-file-io/ http://www.cplusp... (by againtry)
by Tsenguun
Float answer gets rounded
 
I'm trying to display the answer float value as it is, but visual studio code is rounding the float number or displaying the answer as standard number.(i.e:2.5e...
[9 replies] Last: #include <iostream> #include <iomanip> #include <vector> #include <al... (by lastchance)
by woohyeon
How to use other type's memory block?
 
Can you guys check my way is possible? I want a class type's memory block, and I want to get the memory block from my memory pool. but it's a char type's memor...
[2 replies] Last: JLBorges // Thank you! I didn't know about the placement new.. It is ... (by woohyeon)
by ynor123
Jump between number in array
 
I want two compare two arrays. One of them is a subset of the other one. I want my function to return the minimum equal gap between the numbers of the first su...
[no replies]
by neuronphysics
assign ID for states and retrieval the state values
 
I have two classes challenge and SimpleState and they are given as class challenge{ public: enum CONTEXTS{ // context ...
[3 replies] Last: if you want combinations of the states it may be worth doing some bit ... (by jonnin)
by Cataclysm
Calculating average height of N people in C++
 
Hello! How do I make a program in C++ in which the heights of N number of people will be input in centimeters? Also, all of the following should be included: T...
[1 reply] : Don't cross-post. https://www.cplusplus.com/forum/beginner/275016/ (by salem c)
by jpweldon
CL.exe missing for VS 2017 compilation
 
I loaded a VS 2017 project with 'C' subprograms and '.h' files etc. Compilation failed because I do not have CL.exe associated with the VS project. There are...
[1 reply] : When you installed VS2017, did you select the option to install the c/... (by seeplus)
by SirEnder125
How do I make a .a library? (1,2)
 
Hello. I want to know how to make a library (.a file) that I can use in projects on all operating systems/devices (3ds, etc.) How would I go about doing this ...
[32 replies] Last: Ok, thank you very much! :D (by SirEnder125)
by Zaneemma
help me with the modification of the code
 
#include <iostream> using namespace std; int main() { int arraySize; cout<<"How many integers are you inputing? "; cin>>arraySize; ...
[3 replies] Last: the modification of the code You don't say what modification - but ... (by seeplus)
by technologist
subtract 2 Point3d values result into a Point3d inside a function
 
Hamstrung by this difficulty, which should have been easy. The goal was to subtract 2 Point3d points(Q,R) with a third(P) as the result. func() { Poin...
[7 replies] Last: oggin, note that instead of #define, you can use 'using' or 'typedef'.... (by Ganado)
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