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General C++ Programming - October 2017 (Page 12)

This quest is going to improve upon the previous quest. We are now going to keep track of up to 30 student names and grades for up to 10 assignments. We should ...

[1 reply] : Hi, firstly, this isn't the way to take array limits cout << "how ... (by shadder)

by geomazzix

map takes no class function as map_value parameter

Hi there, I want to process commands in a chat program I've started working on. The way I'm planning to do this is by having every command it's own function. ...

[1 reply] : #include <iostream> #include <string> #include <functional> #include ... (by JLBorges)

by acid1900

Refactor: Image - Printer - Draw

Hi, I just came from C, and I would like how to refactor this case for learning purposes. What I don't like from my code: - the way I choose if writing to st...

[no replies]

by stav

Circular include problem

hi, so i just started working on my first ever "big" c++ project and i've already ran in to a bit of a problem. i basically have these two classes: MeWindow an...

[1 reply] : First snippet: Line 5: delete the recursive include. Line 9: Incl... (by AbstractionAnon)

by graciexc3

Number of occurances of minimum and maximum

I have the code written out. I need help with finding the number of occurrences of an already figured minimum and maximum. #include <iostream> #include <iom...

[1 reply] : if you read the file into a data structure you can use a pair of count... (by jonnin)

by iosgaming700

writing an iterative loop to compute sum of matrix

Consider a 2-d Matrix (square) of size N x N a column a. Write an iterative (loop) code segment (algorithm) to compute the sum of the values in each column ...

[3 replies] Last: row and col appear to be uninitialized. you probably need row=col=n;... (by jonnin)

by SoumyadeepRoy

3rd parameter to STL's priority_queue

Since I'm a beginner to STL,I'm having a hard time inferring what the third parameter is really all about. I read the documentation of priority_queue here htt...

[5 replies] Last: A functor is basically the type of a function. A comparator is a speci... (by coder777)

by mdustin94

I don't get the errors

/*Ask the user to enter the option to pick between infix, prefix, or postfix. 2.Allow the user to enter a mathematical expression per the option above. 3.Allo...

[3 replies] Last: So test the program, perhaps under a debugger, and start fixing the er... (by JLBorges)

by haddaauk

file output

I have this data 1 1000.25 2 55.25 3 9999.99 4 33.45 5 2000.00 6 1588.88 7 1699.99 8 14898.25 9 13734....

[1 reply] : After the loop on line 27, the input file will be in a failed state (t... (by JLBorges)

by jarvisw2

Operator Overload ( >, < )

I need help creating a function to overload the comparison operators ( > , < ) so that I can compare Cards from my Card class. The card are made up of a rank th...

[1 reply] : Something like this, perhaps: #include <iostream> #include <string> ... (by JLBorges)

by Darkpony

Find all paths of a maze. Different than most.

I need to find all paths of a maze. I have looked up examples but they aren't any help. Please dont link me to any. I am using a 1D vector that acts like a 2D v...

[4 replies] Last: > It is very odd that you are able to move diagonally. 8-connected is... (by ne555)

by Frank14

Defining a range-checked iterator for vector

Hi all, The exercise 18 of chapter 20 of the book Programming Principle and Practice Using C++ says this: Define a range-checked iterator for vector (a rand...

[10 replies] Last: Thank you very much for your guidance. (by Frank14)

by Jeyselv

Creating a 50 x 50 grid

I had a question about C++ if anybody can answer it for me, I will really appreciate it. Say I create an output file and I want to create a 50 x 50 grid in t...

[4 replies] Last: You have a problem with your nested loops. Line 4: Each time though... (by AbstractionAnon)

by ahoudali

switch statement

Q2: Use a switch statement with breaks between the cases. Create a program that asks the user for two float numbers. Then asks the user if they would like to: 1...

[2 replies] Last: Switch statement is used to switch between values . Each switch is te... (by Dungeon)

by Alenstus

Could someone find the error that I get on this.

#include <iostream> #include <iomanip> #include <fstream> using namespace std; int main() { char vote1, vote2, vote3, vote4, vote5, vote6; int ye...

[3 replies] Last: 1) Please use code tags when posting code, to make it readable: http:... (by MikeyBoy)

by newguy17

nested while loop

good day, im having trouble converting for loop to while loop. i did the "input number of student having 3 quizes each and get the average" in for loop. the pro...

[5 replies] Last: First, you set your y value to 1. Then the outer while loop executes, ... (by goldenchicken)

by closed account 4wvoLyTq

Logic Question

I am looking for the best way to implement what I am trying to achieve. I am creating a basic first game program, and I have the movement working correctly by ...

[2 replies] Last: Yes, hah I am still learning. I will check that out, Thanks! (by closed account 4wvoLyTq)

by MrAndersDK

Database queries pattern

Hello, new poster here I'm often creating programs with database access. The way I do it now is to have a class for each type. For example, let's say I'm cre...

[4 replies] Last: So there is no obvious way to do what I want? Yes, take a look how it... (by coder777)

by Kourosh23

Explain the following lines:

Background information: Insert at the front of a Deque(this data structure is made of doubly linked list, so a front and back Node pointer). void DequeList::...

[2 replies] Last: struct DequeList { struct Node { explicit Node( int v )... (by JLBorges)

by FrostElf

Printing An array Class of Terms as Char & Int

I am working on building a deck of Cards and have a Class Card consisting of an integer for the card value 2-14 (Ace is high) and a character for the suite S, C...

[1 reply] : You have made the suite and value (rank) private, so you need to provi... (by Duthomhas)

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