Beginners - C++ Forum - October 2019 (Page 15)

Segmentation Fault, Dynamic 2d Array Part2

I've found what part of my code is causing the segmentation fault but I don't know why. Can anyone help to fix and explain? The program is a version of lang...

[5 replies] Last: The values I've been testing are Board size: 10 rows, 10 columns xRow... (by stephcat5)

by lexa19

Insert user input into mysql

Hi! I have this piece of code, I want to write the user input into db. The problem is that the variables are of multiple types, int and strings. What am I doing...

[4 replies] Last: the database insert statement should work exactly like it would in a s... (by jonnin)

by closed account E8A4Nwbp

How to prevent the latter function from being called twice

In my visual tictactoe game, I check for a win like so: void HelloWorld::CheckWin(int x, int y) { Check3PiecesForMatch(0, 0, 1, 0, 2, 0); Check3PiecesFor...

[5 replies] Last: Thanks @jonnin , and Glad to have your 5500th post :D (by closed account E8A4Nwbp)

by MazeStuck

Someone who can correct my code, please

#include<iostream> #include<fstream> #include<conio.h> #include<iomanip> using namespace std; struct Student{ char surname ; }; void seeStud...

[7 replies] Last: Hello MazeStuck, This should help to get you started: /* 1)Given a ... (by Handy Andy)

by MyOnlinePersona

Looking for some advice on that piece of software to create

Hello, I need to create a piece of software that includes a data structure and a search function, but I am really struggling for ideas. I am only in my 1st year...

[3 replies] Last: Thanks I will look into these options (by MyOnlinePersona)

by CodingIsHard17

Bubble sort with random array

Hey so I am writing a program that sorts a randomly generated list five different ways (bubbleArray, selectionArray, insertionArray, quickArray, and mergeArray)...

[2 replies] Last: So I am trying to take it piece by piece and here is how I am trying t... (by CodingIsHard17)

by XboxOne2019

Reading secret messages

Instructions: A local company is developing a way to pass multiple messages to multiple places at the same time. It is one of those secret companies. You are ...

[6 replies] Last: For anyone that needs help. I got it working. Just have to clean some ... (by XboxOne2019)

by CodeNovice01

Bar Graph Manipulation assistance

Here is my code for population growth. The output is nearly perfect, I just need the '*' to be beside the date and then endline to the next year. As well as, di...

[1 reply] : #include <iostream> #include <fstream> #include <sstream> #include <i... (by lastchance)

by ASingleGameEngineDevelop

C++ E0413 I want pushback with a Pointer

Hi i have problem with my code. I want use pushBack with a Pointer. But when i use it E0413 appears. How i can fix this. I dont want use vector beac...

[3 replies] Last: > I dont want use vector beacuse its destroys everthing. > I can^'t us... (by salem c)

by maryt

time complexity of recursive function

Hello. I would like to ask the time complexity of this function. Can you please provide a method of calculating the complexity? int guesswhat(int n, int...

[3 replies] Last: you are welcome. Even if the loop changed N, the answer is the same ... (by jonnin)

by lost110

Time complexity of matrix addition

Implement the addition of 2x2 matrix in c++ and then give the asymptotic running time in O notation of it.(Note: Implementation should not be hardcoded and also...

[3 replies] Last: matrix addition is O(N) where N = rows*cols or its N*N if you consider... (by jonnin)

by Beginner of C

Unexpected answer

The answer is ZERO 0. Why. Please explain #include <stdio.h> int main() { int p=100,q=5,r=50; int m; m = p == (q+r); printf("%d",m); ...

[3 replies] Last: Thank you (by Beginner of C)

by CraigAB69

Looking for libg++ library

Hi, I was going to have a go at updating some old code, and I wanted to make sure that the original coder didn't make some changes to the original libg++ fil...

[2 replies] Last: Thank you, I really appreciate that. (by CraigAB69)

by aceadams

cout not printing full string?

Why does this code only return ss, as opposed to sss? int main () { string s="ss"; s ='s'; cout<<s; }

[3 replies] Last: is probably ok due to small string / other general luck that the cla... (by jonnin)

by advancedip

array of class member functions

Can someone help me? #include <iostream> using namespace std; class a { public: void function(){ cout << "hi" << endl; } void...

[1 reply] : #include <cstdio> #include <functional> #include <array> struct a {... (by mbozzi)

by stephcat5

Segmentation Fault, Dynamic 2d Array

Hello, I'm trying to initialize my dynamic 2d array (a gameboard) to blank or '_' or something along those lines. However, no matter what character I put in my ...

[1 reply] : > board = '_'; You probably want your loop variables her... (by salem c)

by Giorgi Cheishvili

C++Tutorial for Beginners 34 - Overloading Constructors (Following this tutorial)

I'm following cave programmers tutorial in which in cpp file visor.cpp it shows me an error with Visor::Visor(string newName) and upon compilation it shows me a...

[1 reply] : what is the error? (by malibor)

by stephcat5

Passing Pointer as Parameter

Long story short, I'm doing a version of Langton's ant for a class. It's the first time I've had to really split up code (assignment requires it) so I'm passing...

[4 replies] Last: Heh, here’s a Tcl/Tk script to play with it. https://www.activestat... (by Duthomhas)

by kwaifu

Get data using ifstream

Hello. I'm trying to get the information from a .txt file and using it on this program. My problem is, that when it compiles, I get numbers like -85546484968 ...

[8 replies] Last: OH ! I erased the ints from the line 63, and I added the '&' before a... (by kwaifu)

by Haley474

Multiple function use and returning a value from a function

I have to Write a function named inputVal() that prompts the user for an integer and uses a loop to validate it using the minimum given in the parameter set. Us...

[6 replies] Last: Hi, I read the question again. The question says "prompts the user for... (by ray210618)

C++

Forum

Beginners - October 2019 (Page 15)