General C++ Programming - C++ Forum

hello I am new to C++ programming and would like to say I love this site it has helped me familiarize my self with the standard library. I have been doing s...

[2 replies] Last: Hi JLBorges, Thank you very much. Thats what I was hoping to hear, I ... (by wunderbred)

by bhasler93

Help with Program

I have a program for my C++ class and I have no idea what to do or get started cause we did not learn it in class. This is the program: For this assignment, yo...

[4 replies] Last: Simply construct a loop that looks at each character. Then for each c... (by axtyax)

by tybalttheappleEater

Library implementations (i.e lists, arrays)

Is there a way to see library (i.e. pointers, lists, arrays) implementations and their class functions such as insert(), delete(), makenull() in actual code lik...

[2 replies] Last: The Microsoft CRT source is provided with Visual Studio; check out the... (by andywestken)

by technologist

can't access constructor vars

rc\main.cpp:16:10: error: 'class A' has no member named 'p' (a.p).If I create object and access its member(a.z) then program runs with no errors. The differenc...

[11 replies] Last: Thx! (by technologist)

by ShankRam

Picking all possible cases.

You are give an array containing 'n' elements. You are given an integer k (input). You must find all possible sets of 'k' elements from the 'n' elements. How to...

[6 replies] Last: Yeah. I just checked it out. It works. Thanks for the solution! (by ShankRam)

by pacman169

Strpbrk function

Any idea how would I test this thing? char * strbrk( char *s1, char *s2) { char c; while ((*s1++ = c) != 0) { ...

[5 replies] Last: Hi, Why not just use brute force? If you would know how to use it, I ... (by pacman169)

by Gyiove

Creating your own std::vector like class from scratch (1,2,3)

Hello everyone! I've been looking at headers like vector , xmemory and stdexcept and there is alot of stuff i dont understand. I looked c++ tutorials als...

[42 replies] Last: First of all that operation probably won't trigger reallocation at all... (by MiiNiPaa)

by cppnoob25

Binary tree remove function

Why do I get a segmentation fault here? Where do I violate memory access? void BTree::del(int x) { del(&root, x); } void BTree::del(Node ** n...

[13 replies] Last: and min() int BinaryTree::min() //public { return min(root); } ... (by johnny cash)

by dolle39

Best practices for checking valid input in OO design?

What is the best practices for checking valid input in a Object Oriented design? Consider the following simple example, where we have a class Person which ta...

[2 replies] Last: It is a good idea to make constructor check invariants. If constructor... (by MiiNiPaa)

by anhnha

Pointer to x or y element of CPoint

Assuming that I have an array of points with type CPoint. CPointArray arrpt; //arrpt is an array of points CPointArray* parrpt = &arrpt; Now can I have the ...

[3 replies] Last: What is the pointer to the second member (y) of the array? Pointer t... (by MiiNiPaa)

by Abdullah507

loop until correct added

If I type a char in int datatype input then the loop becomes infinite. I tried to handle it but can't. However, my program is: #include<iostream> using names...

[1 reply] : When you input characters, cin>>number tries to read it. However it ... (by MiiNiPaa)

by noaboa

Problems with getting string

Hi, im trying to save and load some text to a file you decide to get the name on. After that you need to add some "secret" text, and then you need to type a wor...

[6 replies] Last: Thanks for the help (by noaboa)

by memouz

pass string to DLL

Hi there I need help with c++ string I am MQL4 programmer I know how to pass any value to dll and return it from my language but the string value thats ...

[11 replies] Last: Thank you mr Gamer2015 I use windows 7 I tried that but that text I s... (by memouz)

by nicode

GNU libstdc++ custom std::codecvt linker error

I developed several custom converters and want to comment on the archived topic http://www.cplusplus.com/forum/general/18596/ (MinGW custom codecvt facet VTABLE...

[2 replies] Last: Many thanks for the comments. But your example code derives from the e... (by nicode)

by kakashi07

Replacing letters in a string(A with Z; B with Y; C with X; D with W; etc)

Hi ! Im trying to create a program that will replace letters in a string(A with Z; B with Y; C with X; D with W; etc). So if i input: CAR -> XZI B...

[3 replies] Last: It seems like you are replaceing one letter at a time (all A to Z, the... (by MiiNiPaa)

by sdubs177

How many constructors are in the person class above?

Consider the implementation of the following class class person { private: int age; int getAge(); void setName(string); public: string name; per...

[2 replies] Last: How many constructors are in the person class above? Yeah, Five but ... (by Gamer2015)

by st3pha

Cin inside a function inside a process looping

Hi, I'n trying to do a simulation, I need to enter (cin ) floats like a,b,c,d,e,f,g. and use them in a function V which provides like 10.000 data. so know the p...

[no replies]

by sdubs177

Output of this code snippet?

What is the output of the following code? int x = 0; int i; for (i = 0; i < 4; i++) ; x++; if (x == 3) cout << "*"; I believe it is just *, but ca...

[2 replies] Last: Actually, as it stands, there will be no output. If you click on the l... (by andywestken)

by bishoposiris

time.inl and error C2664

I found this file in a game I'm working on: /*** *time.inl - inline definitions for time-related functions * * Copyright (c) Microsoft Corporation. All ...

[1 reply] : If anyone cares I figured out the answer to this problem. You can sol... (by bishoposiris)

by namanarora

Installing matpack C++ library

Hi, I am installing matpack c++ library from the source http://www.matpack.de/ and getting some problems. While calling make, it says /Makefile.version does not...

[no replies]

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General C++ Programming - July 2015 (Page 10)