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Beginners - June 2017 (Page 6)

Trouble debugging code for a simple program.

I am getting the error message 'in function "int main()': invalid conversion from'char*'to 'char' initializing argument 1 of 'bool studentResults(chat char, boo...

[2 replies] Last: Oh wow i didn't know you had to define arguments as arrays in the prot... (by H00G0)

by Sporarum

Program crashes upon trying to access a double pointed Eigen matrix

Hello, I'm currently working on a neural network program (for playing tetris). The following bit of code is what causes me problems: (taken from the weights par...

[3 replies] Last: Well, that was a rookie mistake ... Everything works now ! Thank you ... (by Sporarum)

by sharbu

Scan an array without knowing length

sample input constraint = 1<arr size<1000 sample input: 1 2 3 4 5 sample output: 1 2 3 4 5 eg: arr =1 arr =2 arr =3 arr =4 arr =5 samp...

[2 replies] Last: It should not be possible to not know its length. If its an array, yo... (by jonnin)

by Bayan Khorshidi Berkeley

Program help

Problem: A movie theater only keeps a percentage of the revenue earned from ticket sales. The remainder goes to the movie distributor. Write a program that cal...

[10 replies] Last: Thank you, with the links you provided and the example you gave me, I ... (by Bayan Khorshidi Berkeley)

by thisisbasil

Polymorphism with smart pointers

I am trying to move past a "C with Classes" approach to C++11 and C++14. My topic du jour is polymorphism, but with smart pointers. Say, I have a set classes...

[6 replies] Last: it looks like the default constructor is deleted rather the copy cto... (by gunnerfunner)

by yhuong

can you help me explanation for all this code???

this code about least cost method. Thank you!!! #include<iostream> using namespace std; int main() { int c , i,j, min, m, n, b, d, c2, c1, p, q; in...

[2 replies] Last: Hello yhuong, Part two: #include <iostream> #include <limits> usi... (by Handy Andy)

by aiiight

Dynamic 2d Array Memory Leak Problem/Question

I am writing a program to compute the levenshtein distance between two strings based on two command line arguments(text files), and this currently does it. Howe...

[4 replies] Last: So the breakpoint error I got in visual studio disappeared when I chan... (by aiiight)

by megatron 0

Never knowing what a class should contain?

I suck at seperating data for some reason. So I'm trying to rewrite how I'm making a SFML game to make better use of classes and OOP to make the code look clea...

[7 replies] Last: > I will have to research what a throw-away design prototype (is) Str... (by JLBorges)

by TheArk

else if

Here is my code thus far, the problem I am now having, is that when I get to the else if function, it will cout only the if function, however if my input = one ...

[3 replies] Last: awesome thank you! (by TheArk)

by DeathLeap

thread1 finish before thread2

Hi there, I want the producer thread finish before the consumer thread gets executed. How can I do that? the output looks like this: buffer 1 has value of 1...

[3 replies] Last: the simple approach is to wrap your thread creation and execution in a... (by jonnin)

by verlisify

Multithreading Synchronization

I am currently taking a university course that asks us to improve on a non-multithreaded solution. The program, when presented with a list of numbers, counts th...

[2 replies] Last: its "usually" faster if you can make totally independent threads so yo... (by jonnin)

by xxvms

Library question

Hi there I am working on assignment where I have build library with books Library have limit of how many books it can store. Books have unique ID. Books...

[2 replies] Last: It all depends on what other operations you need to support. If possib... (by dhayden)

by imprudentspace

Please Help! Function does not take 1 parameters

My program converts from Fahrenheit to Celsius and vice versa, with the option of displaying the Kelvin temperature with a Y/N message. When compiling, two err...

[4 replies] Last: You need to think about what showDegrees() should do. Looking at your... (by dhayden)

by aiiight

Question about Reading text files into strings from command line

Hi guys, I am currently trying to write a program which involves me writing two arguments to the command line like so: > program 1.txt 2.txt >1.txt ...

[1 reply] : You are almost there: string s; string full = ""; while (getline(fi... (by megatron 0)

by Flaze07

threads

hello, I am here to ask why this code is not working properly #include <thread> #include <iostream> #include <vector> void check(int& val, bool& b) { ...

[13 replies] Last: Coder777: while writing the reply to the following thread ... http://... (by gunnerfunner)

by orestisman

Problem with rand()

I used the function rand(), of the library <cstdlib>, to generate a random number and everytime I run it it returns 41. #include<iostream> #include<cstdlib> ...

[2 replies] Last: Thank you JLBorges, it worked. (by orestisman)

by waschbaer

Error from iterating list

Hi, I am using iterator to go through the list std::list<cv::Mat>. Terminal gives me erros as following: error: conversion from 'std::list<cv::Mat>::it...

[2 replies] Last: Thank you. (by waschbaer)

by buckeyejoe

New to C++

I am starting college as a computer science major. I am taking all my prerequisites and one of my classes is a C++ course. I would like to learn C++ before I s...

[2 replies] Last: Buy this book, or look for the PDF version for free on google. I recom... (by BlackSky)

by xari2

Function result is not accurate

Hello Dear, please check following program which is running fine but output result is not correct. please help me to sort out issue. #include<iostream> u...

[4 replies] Last: @mbozzi, thank you dear, i got it. please recommend me latest compiler... (by xari2)

by AFNAlucard

Please Help!

I want to find the lowest price i need to pay to convert text so that every word has only upper or lower case letter.Converting 'A' into 'a' costs 1 $ and 'Z' i...

[6 replies] Last: > But when i try with "aA zZ" > or when i try with "You Are NoT Alone"... (by ne555)

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