General C++ Programming - C++ Forum

Hi every one. I have been learning c++ on my own and I think am doing well. But my problem has been that I have not been having a lot of exercises to practice. ...

[1 reply] : Here are some simple exercises: http://cplusplus.com/forum/articles/12... (by Bazzy)

by DEdesign57

I Need Experienced Advice!

First let me state that I am interested in learning C++ because I want to be a computer programmer. I have taken a semester on Java in my school, so I am not a ...

[2 replies] Last: Since I'm German I can only refer you to some other more advanced Engl... (by thokra)

by TechnoCat

How do I Suppress a Warning in Xcode?

I have a function that computes a power of -1: int negOneToTheXthPower (long x) { if (x % 2 == 0) return 1 ; else if (x % 2 == 1) return -1 ; } Buil...

[1 reply] : the easy solution is to just get rid of your redundant condition: ... (by Disch)

by packetpirate

Undefined reference to constructors and destructor.

I'm having some trouble with a class I'm writing for my midterm. For some reason, I wrote out the constructor and destructor and I'm getting errors when I compi...

[12 replies] Last: +1 firedraco. There's nothing wrong with public data members. This... (by Disch)

by llind212

Error: Expected primary expression before else

I am a beginner student learning to use C++ programming. My assignment is to create a program regarding shipping charges. There are three different shipping ser...

[3 replies] Last: When making elses and else ifs, you must put them directly after the c... (by firedraco)

by wendy898911

cout format problem

i want to print a list of format like the following: NO WORD COUNT 1 abc 1 2 abc 7 but as no, word, ...

[2 replies] Last: Hello if you are using the gcc-g++ compiler as in Linux then you could... (by mikeofthenight)

by mmikkone

The "best" way to return an aggregate value?

Hello, I'm new to the forum. I'd like to get this straight: When you return, say, a class object from a function by value, in principle (depending on the ...

[10 replies] Last: Sometimes you just have to use C++ instead of Java. For example, if yo... (by mmikkone)

by fafner

Qt undefined reference to vtable

I'm writing a simple, simple Qt app, and I'm getting the useless "undefined reference to vtable" message from g++, and I have no idea why. I have one class whic...

[6 replies] Last: @fafner: You're using the Q_OBJECT macro. This macro is define in qobj... (by thokra)

by Fantasy

allegro collision need hlp

please people help me, i have spent the last 9 hour googling and trying to get my collision to work but nothing. i tried everthing and nothing works please help...

[no replies]

by thokra

Dependency injection and very mighty classes? Right choice?

Hi folks! Since I'm currently implementing a Core OpenGL based rendering engine as a library, I find myself confronted with a very common design issue and th...

[no replies]

by venot

how to write a program for this ?

write a program that prompts the user to input an integer number and then output the number with the digits reversed . For example if the input is 12345, the ou...

[7 replies] Last: roger that . i'll show this to him asap (by venot)

by venot

does anyone know how to correct it with a correct coding

//debug6-2 // user enters price // program computes tax rate // 5% at prices $10 and under , otherwise 7% #include<iostream> using namespace std; int ma...

[3 replies] Last: Once again... what's the problem? How can we help you if we don't know... (by packetpirate)

by MintBerryCrunch

Creating a memory manager

Hello forum, I need to make a custom memory manager, and I think I have grasped the concept, I need to allocate a block of memory up front and then hand out ...

[5 replies] Last: @MintBerryCrunch I did ask, because I have been taught this the oth... (by simeonz)

by chrisname

Calculate the ideal block size

I'm writing a program that has to write a list of files into a single file (kinda like an archive), with no compression, and write a list of the files at the to...

[2 replies] Last: Bigger would usually be faster because you'd do less reads and less wr... (by chrisname)

by mukgera

copy constructor with templates

Hi All, I had some issues with implementing copy constructor using the templates. I had tried to implement a small program to check the functionali...

[1 reply] : For template classes/functions, you must put the definitions (the stuf... (by firedraco)

by akmal4ik

get file/folder properties in linux

hi, i want to know is file/folder is hidden or not, in linux. i open folder using opendir function, and traverse using readdir function. For every file/f...

[8 replies] Last: thanks everybody for help)! i have one more question, it is about ... (by akmal4ik)

by kraigballa

Fstream binary question

I can't figure out how to add 5 to every byte, and not just the last value in the Loan object. Loan Objects: that were written to the binary i/o file // In...

[8 replies] Last: One approach is to use flush: // Then I will write result to anoth... (by simeonz)

by demonkyo3

Looping Questions

here are some question i don't understand please some one explain to me. Im new to C++ im sorry. Thank you for your help. 1. What is the output of the follow...

[6 replies] Last: @demonkyo3 If it work in the first place i wouldn't have a problem... (by king214)

by sever

Scopes problem...

Hi, My compiler replies me with an error that I don't know how solve. It says me that "A is not declared in this scope" I've an structure, struct A { ...

[3 replies] Last: Sorry, I may have been unclear. Get rid of line 17. If struct A is... (by Disch)

by raajaash

complex number using structures

Complex numbers have the form realPart + imaginaryPart * i. Both realPart and imaginaryPart are integers. Write C++ code below to define a complex structure wi...

[2 replies] Last: Do you have a question? What don't you understand? What do you hav... (by doug4)

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General C++ Programming - March 2011 (Page 27)