Beginners - C++ Forum

Hi, I'm writing a number analysis program for a course. The program reads integers from a text file, then stores them in an array. A requirement of the assignm...

[12 replies] Last: Hello ayleeta, Very good and much better. Watch your indenting and s... (by Handy Andy)

by Thesar

Iostream, conversation and exceptions (1,2)

Hi everybody. I am writing a program that will take in values through inFile, all these values will be read as strings and converted to doubles. The range is 0....

[21 replies] Last: Hello Thesar, You are welcome. Wish I did, but I line in the US. An... (by Handy Andy)

by illy2112

ceiling floor and round as const int - Need Help

I am very new to programming and was given a HW assignment in which I am to use ceil(), floor(), and round() functions for a real number (4.78). I understand ho...

[2 replies] Last: it's for ease of use with constructs like switch statements, which a... (by icy1)

by samtheman

std vs cout:

#include <iostream> #include <string> using namespace std; int main() { std::string ends = "*****\n"; std::string mids = "* *\n"; s...

[1 reply] : std::string ends = "*****\n"; std::string mids = "* *\n"; creates... (by sciman777)

by garza07

Implement Mathematical Function

Write a C++ program to implement/compute the following mathematical function f(x) for a positive integer x: 1/2 + 2/3 + 3/4 + .... x/x+1 Help.

[8 replies] Last: #include <iostream> using namespace std; double series( unsigned x )... (by lastchance)

by sr2cute702

g++ compiler error help, Matrix multiplication

Hello, I am in need of some help on getting rid of these errors im getting. I am not sure how to fix them. Also not sure how to open a file and send it to m...

[8 replies] Last: thank you for all the replies, and i am not allowed to use Vectors yet... (by sr2cute702)

by mrphilipp7

Can't get getline() to work

When I put breakpoints to watch it, it skips right over the line where it should read getline(cin, sentence). why is it doing this and how can I fix it? It goes...

[1 reply] : When I tried using cin>> it worked but I need to read a full sentence.... (by mrphilipp7)

by Elarionus

The difference between pointers and asterisk pointers?

We've been studying pointers the last few days, and I'm having difficulty understanding the differences between pointers with an asterisk and ones without. I kn...

[1 reply] : First thing's first: A pointer is simply an address in memory . Tha... (by Ganado)

by garza07

............

.././././

[2 replies] Last: /././././. (by garza07)

by Gr8Tortuga

Assistance With Classes (This is to help understand for my Studies - applies to homework)

I am an adult, very new to programming, and working on a C++ course. We have been growing our assignment from Week 1, where the code we have written continues t...

[3 replies] Last: @Gr8Tortuga, classes, conceptually, are for packaging pertinent data t... (by icy1)

by BeginnerP

What is the difference between 100 and 0100 in binary?

I convert 4=100 in binary but converter converts 4=0100. In shifting, 4>>2=1. So, coverter is right, 4=0100. Because 100>>2=000 but 0100>>2=0001. Where am I doi...

[3 replies] Last: Just to be explicit, there is no difference between 100 and 0100 in bi... (by MikeyBoy)

by BeginnerP

Recursive Function Problem

Hi,I can't understand this code. For f(4), prints 4 4 7 4 11 4 7 4 4. For f(3), prints 4 7 4. Why program prints like this? int f(int x) { if (x == 0) retur...

[2 replies] Last: Might be better off storing it all in one structure and only print onc... (by icy1)

by voro

Getline While loop not working properly

It should be a simple code to get all lines from a CSV file and output them on the screen, but somehow it isn't working properly. #include <iostream> #in...

[2 replies] Last: Hello voro, As lastchance said the semi-colon at the end of 18 only d... (by Handy Andy)

by sam1222

Taking scores from text file to create averages

Write your question here. Hi, making a quiz with 5 sections, 10 questions in each sections. There is a class made which takes a text file with questions and ...

[2 replies] Last: Hello sam1222, After reviewing your code I found: <conio.h> This hea... (by Handy Andy)

by newguy17

infix to postfix output problem

i reviewed my code couple of times and still could not point out why is not showing any output at all. can anyone point me where im having it wrong. #in...

[6 replies] Last: @newguy17, I'd avoid doing cin stuff for now. Just have a bunch of ha... (by icy1)

by fivestar

Function not declared in scope

im getting an error saying prepend was not declared in the scope. #include <iostream> #include <cstring> // for getline #include <cstdlib> // fo...

[3 replies] Last: im getting an error saying prepend was not declared in the scope. Ha... (by Enoizat)

by sethfrias

Baby name rank

Hello. Writing program to read file and display rank of an entered name. It must display the ranking on the boy list & girl list. Only problem I'm having is whe...

[6 replies] Last: 1) I think your displayRank() function doesn’t need to return anythi... (by Enoizat)

by WalterCC

Closed and Open Intervals

Hello Hello ! Haw should I write with "for" this: Closed and Open invervals: -> (a,b) -> [a,b] -> (a,b] -> (b,a] Note 1: a, b --> a...

[2 replies] Last: thank you. !!!!!!!!! (by WalterCC)

by nearc

How to create file

Hello, I need to created text file with 100,000 reverse sorted out elements. I generated my random 100,000 elements from website, how do I get the reverse sort...

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

by grumpyw

How to stop user from entering a same number twice?

Write your question here. #include <iostream> #include <stdlib.h> #include <time.h> using namespace std; const int MIN_NUMBER = 1; const int MA...

[2 replies] Last: Use a std::set<int> to hold the numbers which were already entered, ... (by JLBorges)

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Beginners - April 2018