C++

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Beginners - August 2014 (Page 36)

Help with code?`

Hello, I guess I'm not as savvy with while loops as I thought. I know that I have to declare a value outside of the scope to have the loop run. I just don't...

Aug 4, 2014 at 9:45pm

[2 replies] Last: Thanks! I figured it out a little later with help, but this helps too!... (by SVcpp)

by lilmula01

I'm a beginner but I need help bad!

Hey guys. I'm quite the beginner at C++. This question has been bugging me for hours and I CAN'T SEEM TO GET IT DOWN. Please help me! This is what I've been wor...

Aug 4, 2014 at 9:43pm

[5 replies] Last: I finally just decided just to delete everything except the bool and i... (by lilmula01)

by vadkortefa

Looping through files

Hello, I'm trying to run several files through a simulation, where each file name has letters and numbers in them. Suppose I have four files, one1.dat, one2....

Aug 4, 2014 at 8:52pm

[5 replies] Last: Thank you very much, this is exactly what I needed! (by vadkortefa)

by ej711

Checking if 3 Variables are Equal

I need help with a program I am making. The user inputs the values to 3 variables. I need the loop to stop when the variables are equal. I tried putting: ...

Aug 4, 2014 at 8:49pm

[13 replies] Last: while(variable1 != variable2 || variable2 != variable3) { //get ... (by giblit)

by JohnMorris

Switch within a switch called from a function

As the title is referencing is I want to setup functions to call at certain point within the code. For example if I set up four functions fn1, fn2 fn3, fn4 can ...

Aug 4, 2014 at 7:59pm

[14 replies] Last: How does this behave? #include <iostream> void showMenu() { std::cou... (by keskiverto)

by xx1182

SDL and renderers

Oke. I'm starting using SDL, and i need an optimized img loading function. Currently in the new SDL2 there are Renderers, and i'm using the corrisppetivly libra...

Aug 4, 2014 at 7:32pm

[3 replies] Last: I guess SDL.h contains a forward declaration of SDL_Texture without a ... (by Peter87)

by Oboko

How to share cross-platform program using Boost libraries

Hi, I've written a very small, supposedly portable, http server that runs as a daemon using Boost.Asio, developed in Xcode on mac. I've used the IDE build op...

Aug 4, 2014 at 7:23pm

[1 reply] : Well first off, you need to decide how you want to link to Boost. You ... (by ResidentBiscuit)

by ianElliott

yet another primary-expression compiler error

Could someone help me with this primary expression compiler error? proj7.cpp:52: error: expected primary-expression before ';' token admiral% vi proj7.cpp ...

Aug 4, 2014 at 6:32pm

[2 replies] Last: Okay, awesome. That did the trick for now, thanks. I figured it was so... (by ianElliott)

by Pter0dactyl

%d vs %s

I declared a character array and at the time of taking input I used %d instead of %s in function scanf. Isnt my compiler suppose to flash an error for this? Or ...

Aug 4, 2014 at 5:18pm

[2 replies] Last: GCC will warn you if you use the -Wformat flag (included by -Wall). h... (by Peter87)

by ci one

storing one item in two different vectors

It seems it's not possible to store the same item in *two* different vectors, right? The way I tested this was pushing the item to vector1, then to vector2, ...

Aug 4, 2014 at 5:03pm

[10 replies] Last: Thanks, makes sense. I think the double asterisk signature is certainl... (by ci one)

by danzal

i cant open text file

im unable to open my text file #include <iostream> #include <fstream> #include <iomanip> using namespace std; int main() { char u; int id, yrs,...

Aug 4, 2014 at 4:58pm

[3 replies] Last: why is my output like that You just need an endl in your cout s... (by Chervil)

by Ozwurld

Help Simplify the following for loop

Hello all, I've been given an excersize to simplify the following forloop but i think its already simplified, what are your thought, is there anything more i ca...

Aug 4, 2014 at 4:38pm

[6 replies] Last: Instead of for( int j = 2 you could put for( int j = 0 That requi... (by Chervil)

by beckfordcub5

changing numbers to upper case letters

Hi, I was wondering how I would change the numbers 0-9 to the upper case letters A-J. I dont want to have to write a switch statement or an if else for each num...

Aug 4, 2014 at 3:33pm

[4 replies] Last: Hint: For These Type of Programs always make use of the ASCII Table :... (by Disch)

by Deviouscola

Efficiency Question

I'm working with what is essentially an excel file, in the sense that it has rows and a defined number of columns. I am currently holding each column in separat...

Aug 4, 2014 at 3:16pm

[1 reply] : I will also be going through a pointer to accesses fields for compari... (by AbstractionAnon)

by beckfordcub5

output largest negative number

Hi , I was wondering how to write this program: Input double numbers until sentinel value of 0. Output largest negative #, if theres no negative number it w...

Aug 4, 2014 at 11:02am

[3 replies] Last: As giblit has said, it's as simple as that. (by guteyuro)

by Rashad2

Algorithms

Hi guys. Im wondering if there is a place were i can practice reading off algorithms that show steps on how to write a program and the programmer writes it. I w...

Aug 4, 2014 at 10:10am

[2 replies] Last: you can try Algorthms in C by robert Sedgewick https://www.google.cm/u... (by shadowCODE)

by sanann

pointers using boost::ublas::matrix

Hello, Using boost matrix, implemented matrices to generate 2 sets of low pass and high pass filters. these wwere implemented as a function. now i need an the ...

Aug 4, 2014 at 9:25am

[no replies]

by maiden

Program exits if non-integer is entered

How to make this program prevent from terminating after entering non-integer such as "letters",? #include <iostream> #include <stdlib.h> #include <time....

Aug 4, 2014 at 9:19am

[7 replies] Last: Yes, by program logic. "123" is one input. "+" is the next input. Writ... (by keskiverto)

by Nikko YL

(algorithm) transform every element and append to the same container

I have a vector with 3 string elements {"zero", "one", "two"} . What I'm trying to do is to "repeat" every element and append to the back of the vector. So the...

Aug 4, 2014 at 9:15am

[6 replies] Last: Thank you. I have learnt a lot from your reply. (by Nikko YL)

by ppoy123

HELP ME! C++ EXAM

1) Make a program that will determine whether the given number is even or not. Sample Output Input a number: 2 2 is an even number 3 is not an even number ...

Aug 4, 2014 at 9:06am

[5 replies] Last: Oh and by the way the modulus operator is the same as c = round(a/b) ... (by giblit)

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