Beginners - C++ Forum - January 2010 (Page 3)

Hi, I have a program where I need to periodically output some data to an external file. That is to say, each 10 iterations I want to save the info in sequen...

[6 replies] Last: Sweet, now is working fine. Thank you very much for your help. C... (by joegi)

by cdummy

C++/easy tasks for beginners

Hi, I am looking for easy C++ tasks (if there is answers is OK :))? Thank you in advance!

[4 replies] Last: haha, the radio active vampire bunny is evil.. (by blackcoder41)

by floppyjr

string.find for multiple matches per line

hello all, this is my first post here. I need help regarding searching and replacing strings on a textfile on multiple matches per line. For example i ha...

[2 replies] Last: if we change it to while, it will cause an endless loop. but you gave... (by floppyjr)

by Invertedzero

Struct Arrays and Functions

Hi there, I've been having problems trying to pass a struct pointer array in dynamic memory to a function. Could anyone please help me with where i've gone w...

[2 replies] Last: ah yeh... i kept presuming it was wrong because i got even more errors... (by Invertedzero)

by Azuriin

Question About Headers and Compiling

The last time I compiled a program and used it on a computer other than the one I compiled it on, it ran errors over what I am guessing was a missing header fil...

[5 replies] Last: it doesn't compile the code exactly, it takes the definitions listed w... (by gcampton)

by sukhi

hi....

may i know how data file handling can be used in a program such as the one below.... please suggest. #include<iostream.h> #include<conio.h> #include <cty...

[3 replies] Last: Maaaaaan I remember turbo C!! That thing was so cool back in the day! ... (by kevinkjt2000)

by Zweli

dividing

Hello, I want to know why programmers sometime use for example: X = (variable * 21845) << 16. instead of: X = variable / 3 I know that (21...

[3 replies] Last: For the sake of correctness, your example should rather be: X = (va... (by lloydchristmas759)

by shadowvillian

allegro problem

im trying to use allegro and when i typed up a simple program in it, it gave me alot of compiler errors. but the biggest reason to that is this - alplatf.h: N...

[7 replies] Last: Maybe in 2007 it was a matter of time. Now it's a reality. (by helios)

by jagy96

Area under curve recursive call crashing

I am trying to find a way to estimate the area under the curve of f(x) between 2 points a and b. I evaluate f at the endpoints of the interval, and use them to ...

[4 replies] Last: Actually I just threw that out and decided to go with my instincts on ... (by jagy96)

by newNode

STL list C++ sort and delete :)

struct node{ int num; int num2; }; list<node> list; list<node>::iterator iter; node temp; temp.num = 10; temp.num2 = 20; list.push_back(temp); h...

[6 replies] Last: oh ok i got it, thanks (by newNode)

by Angriper

Arrays printing out random characters.

Hey, I am attempting to build a simple tic-tac-toe program. I haven't been programming long, and appear to have bumped into this problem. This is my code: v...

[7 replies] Last: ok, hope that helps you anyway. (by blackcoder41)

by olredixsis

subclass object on superclass

I am wondering if this is possible. I want to make an object of a subclass to the superclass. class Superclass { public: virtual void doS...

[8 replies] Last: That's it! Thanks Bazzy, your a big help! (by olredixsis)

by kevinkjt2000

for(;;;) ?????

I was looking through some old code and stumbled upon this: for(;;;) { commands ... } What does for loop do? More specifically I would like to know i...

[3 replies] Last: true. it's much like while (1), do / while (true) or for (;;) (by gcampton)

by Computergeek01

Cracking System()

I would like to start by saying that I'm posting this in the Begginer section because I feel like a Noob asking it. Question: How does the system() function...

[15 replies] Last: C:\WINDOWS\dir a) There's no such program by default. b) You can't k... (by helios)

by enterprize

Clearing the istream

I don't like using ststem("PAUSE"); to pause my program, so instead I use something along the lines of cin.get('\n'), and tell the user to press enter. The p...

[4 replies] Last: Maybe try using cin.ignore? http://www.cplusplus.com/reference/iostre... (by kevinkjt2000)

by dps

Selection of 5 points from n points or nC5

I want to select 5 points from n given points exhaustively. in other words i want to do nC5 in C++ but not getting a simple solution for this. Please reply with...

[2 replies] Last: If you want permutations, you can use std::next_permutation. If you w... (by jsmith)

by ZueS

[TUT] For LOOP

Well I know that some people have trouble with the 'FOR LOOP' so I am here to Explain. int count; for(count=1; count<=100; count=count + 1) cout << count <...

[7 replies] Last: Return 0+1 Let's have a button where, if several people vote to delet... (by tummychow)

by hopesfall

base ^ exponent

I want to be able to display (BASE ^exponent = answer) 10 times. I want to increment the exponent each time through the loop as well and get a new answer. What ...

[4 replies] Last: So all I had were the data types wrong? Thanks for the help, much appr... (by hopesfall)

by LimePatch

noob question (adding more options)

Hey there! I am new on this forum and I have started with c++ some weeks ago, although I've had previous programming experiance. I am trying to make a conso...

[2 replies] Last: okay, I'll try that thank you very much! (by LimePatch)

by sportsguy09

Program With Float Values

This may seem to have a very easy answer, but I'm totally confused. I'm trying to write a program gets two float values from the user. The program should output...

[6 replies] Last: answer = num1/num2; This actually won't work -- num1/num2 perform... (by Disch)

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Beginners - January 2010 (Page 3)