Beginners - C++ Forum - February 2009 (Page 4)

what is the c++ code for identifying if a number is a prime number or not?

example: enter number:97 your number is prime enter number: 4 this is not a prime number!

[4 replies] Last: What ever happened to just answering http://www.cplusplus.com/forum/ar... (by helios)

Timer

I'm supposed to create a program that inputs a start time and end time in the format hr:min:sec and then finds the total time elapsed. Also, it's using a 24-hou...

[1 reply] : Can you not use functions? It would simplify things a lot if you wrot... (by jsmith)

by masiht

void function

void is the type of function which doesn't need to return then why is this program not working ? #include <iostream> using namespace std; void addition(i...

[8 replies] Last: Globals work too. (by vorticidal)

by masiht

heap and stack

Can anyone please tell me what is heap and stack with explanation ??

[2 replies] Last: A variable declared statically is on the stack int i; A variable de... (by Bazzy)

by amit kala

pls Explain Operator Overloading

Hi All can anyone help me in explaining operator Overloading concept, i know its a type of polymorphism and we can use operator in diffrent ways with the he...

[3 replies] Last: Read the tutorial at http://www.cplusplus.com/doc/tutorial/classes2.ht... (by Bazzy)

by masiht

declaring a function

Why do sometime we declare the functions and sometime do not ? how do we know when to declare the function ? like // function example #include <iostream> u...

[7 replies] Last: eker676, your 'function protoype' is the (forward) declaration, the d... (by closed account z05DSL3A)

by monkeyit

Repeating an Action

I'm supposed to print off stars. I prompt the user for a number (we'll call it n ), and then print out n lines of stars. The first line will have one star an...

[4 replies] Last: @eker676 - I don't think many people would realize they can search "pr... (by Mythios)

by Zachary

Eliminating duplicate lines in a text file

I have a very large text file, with something like 39 million lines. Each line is a string of 23 integers (but I don't need to treat them as integers for my pu...

[9 replies] Last: Try the STL next_permutation algorithm on for size. (by seymore15074)

by TylerM91

I'm not sure what I'm doing wrong.

I've been working on a program for a little while now, it's a program to help with the ideal gas laws in chemistry. (I understand the equation inside and out, I...

[4 replies] Last: Yeah, I'd just skimmed it to see the syntax. I realized that just bef... (by TylerM91)

by Ph0X

Outputting sounds (from frequency)

What I need to do is to output sounds from the default sound playback device. I'm guessing I have to use DirectSound or something. What I basicly want to do ...

[7 replies] Last: Sorry but bump again. I really need to get this done. Can't find how... (by Ph0X)

by masiht

header file

Can any one tell me what is header file and give me some examples .I will be thankfull.

[6 replies] Last: Header file #include <iostream> #include <myfile.h> ... (by eker676)

by Nappy

Practice questions...?

Hey Im a student learning c++ and am wondering is there a site with questions on it, programs to write, solutions etc Just to see if im progressing at all?? ...

[2 replies] Last: Here's a link with project ideas. http://www.cplusplus.com/forum/begi... (by eker676)

by shoubie

Calculating coin combinations using do-while loops.

Hello! I'm new at programming; I just started it last month. I have an assignment that involves using do-while loops for calculating combinations of coins. I'm ...

[9 replies] Last: For future reference place [ /code] around the text. Without the spa... (by eker676)

by masiht

source listing

what is source listing for a program ?

[3 replies] Last: I don't know what you mean but he means the actual code you write i.e... (by eker676)

by oj4y

Need random number, different % times

I need to generate a random number, but a better chance at generating a particular one. For example: I would like to generate 0, 90% of the time, and 1 10%...

[8 replies] Last: Got it! Thank you! (by oj4y)

by frankiefrazer

How to use setw and setfill properly

First, this is a homework assignment. I am not trying to hide that. I also don't expect anyone to do my homework for me. But I do need help understanding H...

[6 replies] Last: Finally got it... Just a matter of proper placement and syntax. Ge... (by frankiefrazer)

by whatthefreak

Store results in a while loop

I am a complete beginner, I just need a hint or something to this problem: We have to create a program where the user inputs a number, and figure out how many...

[5 replies] Last: Let me reword the problem in a manner that should help make how to cod... (by jRaskell)

by deviant1

Rounding Statement

Thank you!

[1 reply] : Try reading this article: http://www.cplusplus.com/forum/articles/3638... (by Bazzy)

by ggggiuseppe

Hi all! Info on a console game

Hi, this is my first message here. Great site! I'm creating a console game based on an italian game, called "Tombola" http://en.wikipedia.org/wiki/Raffle. ...

[no replies]

by wolfsklauw

debug with visual c++ 2005 express edition

Hi, i would debug a project in visual c++ 2005 express edition, but i get this error: fatal error C1083: Cannot open include file: 'windows.h': No such file or...

[4 replies] Last: Have you looked in the include directories? (by Bazzy)

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Beginners - February 2009 (Page 4)