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Beginners - July 2021 (Page 3)

My sibling ask me to find error in his coding. He want to find smallest value he get highest instead. i already try figure out. i spend 2 hour try changing his ...

[8 replies] Last: but what does numeric limit do ? In the code above, it returns the ... (by seeplus)

by izlezotfilma

Domino max number of tiles

An integer N is given, followed by N number of pairs of integers - the pairs represent domino tiles. Each tile can rotate (ie the first number becomes the secon...

[5 replies] Last: So, like I said in my first post ... set up a container of target domi... (by lastchance)

by kseokjk

How to find the year for highest value ?

I have a file that consist of 30 rows and 3 column. I have to find the highest value of the second column with the year. for example the file is like : 2012 ...

[11 replies] Last: for ( int year; fromFile >> year; ) { // use year } No... (by keskiverto)

by blurfellow

How do I continue with this question

Write a function that reads all lines of the input, and print the number of lines that are exactly equal to the first line (including the first line itself). ...

[2 replies] Last: #include <iostream> #include <string> int main() { std::string fir... (by seeplus)

by jhbardwell

Creating a nested for loop clipping function

My old code reads a spritesheet (rows = different buttons, cols = different button states) one row at a time using for loops and divides them into individual sp...

[1 reply] : its not the same code... there is nothing at all like the line 14 for ... (by jonnin)

by jamiprogrammer

Code loops when you try to print the entire queue

Hello all, I built a program around the concept of queues, while it compiles and allows input and removal of a member, printing ( selection e) causes the pr...

[6 replies] Last: Thank you so much, I understand now. (by jamiprogrammer)

by Hyung

How to fix this coding ?

i have a coding that need to read from a file. i have to find the sum of 2 column from the file. the file is like this : Mon 12 5 50 Tue 20 8 13 Wed 20 2...

[4 replies] Last: that is an initialization, not a subtraction. its set == to -1 this ... (by jonnin)

by mnm71

How can I improve this code?

I wrote this code but how can I improve it without using at least two while auto _Length = DataBlockCount * DataBlockLength; vector<double> totalPacket; ...

[6 replies] Last: > auto _L ength = DataBlockCount * DataBlockLength; Avoid using id... (by JLBorges)

by Dufeng

The size of pointers in 64 system

According to cpp reference, a pointer in 64 system is 8 bytes = 64 bits = 2 ^ 64 (https://en.cppreference.com/w/cpp/language/types). However, the address in th...

[10 replies] Last: > The original ideal behind C++'s allocator was to encapsulate these d... (by JLBorges)

by Dufeng

For loop behave differenly each time

I am learning c++ and try to understand the object lifetime of the move constructor and copy constructor. I am using g++ 9.2.0, c++17 in vscode. I created a str...

[7 replies] Last: The point of @seeplus's post (I think) is that neither your copy or mo... (by mbozzi)

by jhbardwell

adding and removing structs from a data structure

I'm trying to find a data structure to which structs can be added or removed based on user input of the struct name. I thought I had found something promising i...

[1 reply] : > Is there a way to remove an element from the middle of a vector Loc... (by JLBorges)

by Lacy9265

Missing class template error

For this code I have to use an adjacency matrix to represent the graph. I'm having trouble in my driver.cpp file calling on the graph.h file because it says cla...

[6 replies] Last: Never mind figured it out. (by Lacy9265)

by maffinpower

operator overloading, no acces to private members?

Hallo, I am currently learning C++. But now I wrote some code to overload operatos. The first operator- is not working and returns "No access to private membe...

[2 replies] Last: Thanks, helped me out alot 😊 (by maffinpower)

by vics2021

make 3d array from another data structure

I have old C/C++ code. Here is fragment unsigned char * data; unsigned long data_size; ... data_size = x * y * channels; data = (unsigned char *)mallo...

[8 replies] Last: Easier in Fortran: Wow! Fortran has sure changed massively since I ... (by seeplus)

by jhbardwell

Trying to use command pattern breaks my code

I'm trying to make a small game engine in SDL2 based around enum switch state machines because they make things easier to organize, interpret, and less messy. A...

[3 replies] Last: I think I got the gist except for how struct user_input actually work... (by mbozzi)

by saam

undeclared identifier 'File

I have got this error Use of undeclared identifier 'File'. How do i fix it ? thanks void DeckGUI::filesDropped(const juce::StringArray &files, int x, int ...

[2 replies] Last: yes thanks@heios. now, Build Succeeded but I cant dragged the file int... (by saam)

by jhbardwell

Problem with invisible textures

I am having an issue with SDL2 where I want to see and use two different button textures at different times in different places using enum states. Each button i...

[5 replies] Last: Thank you. So, I should nest the input, or functions that call up the ... (by jhbardwell)

by nodesc

2D Array Can't Pass As Parameter

Hi, all This program is meant to create a 2d array from user input and then proceed to display this array but with the number of elements swapped with each o...

[3 replies] Last: Perhaps: #include <iostream> #include <limits> #include <string> #i... (by seeplus)

by Vitrixvictor

c++ searching from a text file ,when I terminate and run the program again it says no id found

when I search from a text file my program finds the record in c++, but once I terminate it and run it again it does not find the record, it says no id found,I a...

[6 replies] Last: As a first refactor, consider. This first reads the file (if present),... (by seeplus)

by grackle

new wannabe dev

So, I think my problem is I got too much information available, and need something of a funneling point to start at. At the moment, I'm only interested in makin...

[5 replies] Last: Another game-engine: https://github.com/OneLoneCoder/olcPixelGameEngin... (by thmm)

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