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Beginners - January 2019 (Page 9)

Was wondering if someone could give me any ideas, tips or starters on this problem: Prime Time! – Write a program that computes and prints the nth prime nu...

[18 replies] Last: @Grime, Here is a simple implementation of the sieve. Even in this un... (by dutch)

by AL88

What am I doing wrong with these logic gates?

I am trying to write a program that takes a poll on favourite colours from 10 different users but i can't get the logic right for 5 each of 2. Please show me wh...

[4 replies] Last: #include <iostream> int main(void) { int a=8, b=8, c=0; s... (by Cheddar99)

by riversr54

Problems with Vectors in Microsoft C++ (1,2)

I'm having a problem using STL vectors in Visual Studio 2017. I know there are some differences in Microsoft C++ and other versions but I can't believe that th...

[23 replies] Last: It happens. Now you know what looks like one problem can be something... (by closed account E0p9LyTq)

by glasseater

Programming Ending without meeting both criteria

So, I have this assignment and basically, I need to run the program until all seats are sold out of both halls. However, the program stops after one hall sells ...

[6 replies] Last: Sorry I should've explained better I did that and what JL said. When I... (by glasseater)

by inf2405

Newton's Method

Hi, I have a written the code for Newton's method by using the Pseudocode from my professor. The problem is I can't see why it doesn't provide the output. ...

[5 replies] Last: debugging just shows you what is happening. it does not omit anything... (by jonnin)

by Mister H

String

I donw know how to make a program that allows a user to enter a word and then The program desplays the word user entered. Can someone help me? Thanks

[2 replies] Last: Thanks. It helped a lot. (by Mister H)

by majstor

Need help !

Hi, my son needs help. There is a fault line 7 and still? 1 #include<stdio.h> 2 #include<math.h> 3 main() 4 { 5 int A 6 ;float x 7 ;printf("unesite broj") 8 sca...

[2 replies] Last: Thank you (by majstor)

by Kiryu

Why does the following snippet not compile?

struct A { virtual void method(int) {}; int method() { return 0; }; }; struct A_child : public A { virtual void method(int) override {} }; int main() { ...

[3 replies] Last: The issue isn't just that they are the same identifier, that's call ov... (by Ganado)

by closed account 1vf9z8AR

Sweep line algorithm

https://www.hackerearth.com/practice/data-structures/trees/heapspriority-queues/practice-problems/algorithm/theatre-830bdbff/description/ My approach is givi...

[4 replies] Last: I saw data structures written (by closed account 1vf9z8AR)

by ksau

Function pointers drive me nuts ;-)

Dear experts, I have a widget class that displays values on a dashboard. These values are generated by several other classes measuring different stuff. While...

[4 replies] Last: Very cool, thank you all for the quick replies! I will now try to unde... (by ksau)

by vincentthorpe

How to (set size or resize) and fill: Two dimensional string array inside a function?

Hi I need to make a function that modify and write, a two dimensional string array passed as an argument. The two dimensional array size will be set inside ...

[2 replies] Last: @salem c (293) thank you very much! it works perfectly, and very profi... (by vincentthorpe)

by dtle647

Average line from a text file???

I'm very new to C++ and I have an assignment that has to do with reading in a text file and finding the average of each line. Then pushing the final scores to a...

[2 replies] Last: This may not be quite perfect, and salem's code looks easy to follow, ... (by Cheddar99)

by formatyes

Best way to store records / fields of csv-files in memory?

Hello, my csv-file has 1000 records and every record has 15 fields separated with "/". Now I want to analyse this data and I'm not sure how I have to store t...

[6 replies] Last: omg ...yes I remember ... I read it ... about heap und vectors but I f... (by formatyes)

by ace184

Would an if statement work here?

I am trying to figure out how to make a user input a certain number of students and certain number of classes. Say 3 students and 5 classes and if they dont, it...

[4 replies] Last: > I am having trouble on figuring out just how to write and implement... (by JLBorges)

by bscruggs99

What do you do when you don't know how to solve a problem?

I don't mean how,to code the solution though. I was looking at spoj this morning and I forget the problem but the answer was done in a simple for loop. I know h...

[12 replies] Last: Lol oh. The only one I have right now is introduction to algorithms. I... (by bscruggs99)

by Eristato

?? Non-Repeating Random Number Array ??

Is there any way to create a number array that prints out 20 random numbers with no repeats? Could it be done starting with the code below? #include<iostrea...

[5 replies] Last: - Create an array from 1 to 100. - Select a random index into the arra... (by dhayden)

by Maxster

Tetris Help

I am trying to start a project that makes the game, Tetris. For this part, I need to generate seven unique 2-dimensional arrays that will represent Tetriminos (...

[9 replies] Last: I can't use classes to make the Tetris game. I have that code because ... (by Maxster)

by lost110

Facing problem in structures

Hello guys! I was studying structures. Kindly see the code below here. So it is taling information from user and displaying it! Now how will i modify it to tak...

[14 replies] Last: Regarding the original problem, let's start by moving the reading and ... (by dhayden)

by Unspoken

Is it possible to create a template that accepts type T which is an object or pointer to an object?

Hi guys, So I am wondering is it possible to create a template that will handle two different types simultanoulsy. For example: class Point { publ...

[8 replies] Last: Thank you for explanation, that was very helpful. (by Unspoken)

by Bopaki

This program works fine if I work with numbers but not with strings

If the variables are numbers I get the expected output but if the variables are strings it bombs out. #include<iostream> #include<string> using names...

[2 replies] Last: Okay it now works fine. I changed the template type to void and every ... (by Bopaki)

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