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Beginners - June 2018 (Page 8)

hello ! i would like have help in the calculation of runtime complexity. Matrix . given matrix which its columns are sorted in an ascending order , and also i...

[2 replies] Last: It appears to be O(N) where N is # of rows*cols. Its sorted, so find... (by jonnin)

by OKcomputer

Looping through an array with unexpected results.

I couldn't find anything online so.. arr is an array of a struct called key. Each struct has an ID and a .one which is something like "8ANNLP". When the...

[5 replies] Last: An array of size 6 is not enough to store a string of length 6 because... (by Peter87)

by italo08

how call functions in c++

Write your question here. Hi I have program have many functions I want if the first functions valid call the second function if the second function valid call...

[2 replies] Last: Here is another simple program to demonstrate what youre saying so hop... (by kingkush)

by italo08

stop errors c++

Hi everyone I have problem in my visual studio when I run the the program I find a lot of errors and when click in this errors open other window not my statem...

[1 reply] : Fix the first error and recompile. Subsequent errors are often a resu... (by jonnin)

by closed account 4zUjy60M

How to use while loops to ask for input again?

[1 reply] : Please format your code correctly. Edit your post and add [co de] a... (by Ganado)

by Geekster123

Vector of Vectors Problem

Hey guys! My question concerns an issue I'm having with my code. I'm writing a program that creates vectors for class test scores. It takes user input for the s...

[1 reply] : Found out my issue after looking at my code. Didn't create the vector ... (by Geekster123)

by resuzhjz

string in function

Main idea is to make function that will include string, and I don't Know what I need to fix. #include <iostream> #include <string> using namespace std; ...

[1 reply] : strings must be in quotes, is all. try "red" here: int main() { cout... (by jonnin)

by espoice

about function calls from pointers to derived classes

Hello programmers! I need your help to correctly call a function from a derived class, here the example: I have such a header file with this virtual class...

[7 replies] Last: compiler error: C++0x auto only available with -std=c++0x or -std=gnu... (by keskiverto)

by bobbyflay123

gimp

Write your question here. how do I put if else statement what I got but get a lot of errors imp

[1 reply] : This code is Java, not C++. (by helios)

by jaodopao

fstream remove() function isn't deleting this file

Hi, I'm trying to make a puzzle game in Dev-C++, and one of the solutions is manually renaming a text file to 'cascatallus.txt' then telling the program to read...

[1 reply] : Why are you opening the file if you are trying to delete it? That's pr... (by tpb)

by pucksnow

Using the flood fill algorithm in a multidimensional maze.

I am very new to C++, and I recently made a maze generator by using 2D arrays. However, I need to create a "mouse" of sorts to travel through the maze. It shoul...

[5 replies] Last: ok. adding the mouse... play with it, see if you can figure it out. ... (by jonnin)

by passiontrip

Populating an array with data from in ifstream

So I am working on a class lab and I am pulling a bunch of doubles from an infile and storing them into an array. I initially had this working but not to my pr...

[2 replies] Last: This was super helpful man thank you so much! (by passiontrip)

by juliancruz87

copy data from function to a var.

Hi guys, hope you're doing great! I would like some help with this. I know is a very noob and rookie question. I'm trying to get a value from a function, ho...

[5 replies] Last: it depends on what you really want to do. for a simple, single threa... (by jonnin)

by adam2016

std::vector range checking?

Hi guys I wrote a function to find the highest number in an array and a vector,it should work on both, when I use the operator to pass in my data it works ...

[2 replies] Last: The .at() function validates the index and throws an exception if it i... (by Peter87)

by BrettD565

Program problem reading specific lines from a vector in a file in c++

Hello all! I am new to the language of C++ and am taking a summer class on Data Structures. MY professor has not been helpful or responsive to any questions I'v...

[2 replies] Last: You also need to implement your constructors. Unless your using the o... (by jlb)

by zapshe

Accessing computer components (Camera)

Hi, I was wondering how to open up the camera on a computer using C++. I found the "OpenCV" library, but Visual Studio is a huge pain when it comes to using a n...

[9 replies] Last: Thanks again everyone ! I just finished with VcPkg and it worked great... (by zapshe)

by grider67

Setprecision use

How do format my output to 2 decimal places using setprecision //Credit Card Interest Program #include <iostream> #include <iomanip> using names...

[4 replies] Last: tpb is correct on the precision. I'm assuming that the lines cout <... (by SM Bamaboy)

by justStarting

Code pointers/cleanup for working program

I'm just looking for some pointers on the following code. Everything worked in the end but I feel like some of the code was unneeded and wasn't sure if I did t...

[4 replies] Last: Thank you for all the replies and critiques. I will review the code an... (by justStarting)

by bmakloski

Application That Uses Email as Input

Hello all! I recently got a summer internship developing a small program for a manufacturing company that essentially wants to keep track of different work o...

[1 reply] : the interface is unrelated to getting the emails. QT is a GUI develop... (by jonnin)

by snupeeh

I need a little help

Hi there, i tried for a lot of time to do a project for my college but for me it sounds fkin impossible since i have to combine C++ with Access and do some stup...

[9 replies] Last: Oops yes I just meant Visual Basic. Thanks. (by Manga)

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