General C++ Programming - June 2011 (Page 25)

by kfmfe04
enforcing mutability
 
1. suppose I have a class called Cement whose instances are immutable when just read from the database or are just written to the database 2. all other i...
[11 replies] Last: I think I understood your problem, but I don't think you understood wh... (by kev82)
by icedabz
Small error, please help. "Undeclared (first use this function)"
 
Hey guys, this is my first semester in C++ and i'm not grasping the whole thing yet. It's errors like these that have me ripping my hair our because I'm not abl...
[4 replies] Last: #include <iostream> #include <string> #include <iomanip> #include <c... (by junh1024)
by suetam
ecuacion
 
Hola como están tengo la siguiente ecuación: F=(G*m1*m2)/(d*d); donde m1 y d son constantes, pero m2=2000, necesito un código que produzca una tabla ...
[6 replies] Last: Lately, it IS much to ask for people to write full sentences, much mor... (by webJose)
by sanehatter
array addition formula
 
Hi There, I am using the following statements in a loop. The last statement is supposed to add them together but all three lines yield the same values. What ...
[9 replies] Last: It's working now. Thank you hamsterman. (by sanehatter)
by rucafe
Using classes to retrieve data
 
I have a file that contains thousands of numeric entries sorted into four columns. The structure of the data looks something like the following: 3 0.2 0.5 ...
[5 replies] Last: Considering that the file has thousands of numerical values, it would ... (by closed account zb0S216C)
by waqqassheikh
Why can't generic types be like regular types.
 
I've been looking at templates where a set of instructions is carried out on any one type of data and I get the gist of it and all but I couldnt help but wonder...
[2 replies] Last: Because then: 1. Depending on what your declaration means, it is more ... (by helios)
by suetam
datos en c++
 
hola tengo este codigo que resuelve una ecuacion. necesito hacer un nuevo codigo que obtenga 1000 datos desde 0 hasta el valor de M2y f para cacer una tabla co...
[6 replies] Last: como puedo agregar la forma de obtener 1000 datos para F y M2 en este ... (by suetam)
by kfmfe04
must embed operator<<() implementation when using namespaces?
 
Must I embed or is there a way to break out the implementation? Of course, if I embed the implementation on Line 9, it works - however, I prefer to break i...
[9 replies] Last: I think you are worrying too much. AFAICS you aren't polluting it beca... (by ne555)
by icedabz
Simple Problem With Undeclared Statements
 
Hey guys, this is supposed to be a simple program where a teacher can enter the marks of students, find the average, s.d and etc. I have a problem inside s.d pa...
[2 replies] Last: I'd just like to say thank you, it works flawlessly now. (by icedabz)
by jdewey
Screenshot program
 
I currently do have a working program that takes a screenshot of the cmd window when it runs. I now need to make it take a screenshot of a web page and have no ...
[no replies]
by TCHATTE
Generic Multithreading (Boost)
 
Hello all, Here is my problem: I have 3D containers in which I store any data on which I wish to apply various filters, mathematical morphology, etc. ... So ...
[2 replies] Last: I finally found a way to do it! I just put my function and its paramet... (by TCHATTE)
by Aikon
template multiplications of two matrix
 
I have the folowing code that allow me multiplicate matrix but I want it to void the size's of each matrix. Something like that: template<class T,class S...
[4 replies] Last: Now al work. Thanks you very much. #include <iostream> using namesp... (by Aikon)
by Larsounet
Schedule programs
 
Is there a way in C++ to schedule the running of programs, so that they start automatically at certain moments of the day?
[2 replies] Last: cron exists only in *nix world, on windows you could use task sheduler... (by modoran)
by TechnoCat
Can't Bootstrap Boost Libraries: Required Files Not Found
 
I'm trying to install the Boost libraries in Mac OS X (exactly what version is classified according to Apple, but as far as I can tell, it behaves the same as S...
[1 reply] : I solved this by creating symlinks in /usr/local/include for everythin... (by TechnoCat)
by amogh09
Char Array
 
I am making a program in which i need to assign a string to a char array but when i do so it flags an error - "lvalue required". For example #include<io...
[5 replies] Last: A = "Hello"; while executing this line compiler create a const char a... (by dearvivekkumar)
by GPP
How copy one char from a string
 
hi, Im trying to copy one char from a string for example std:string abet; std::string message = "Hello worlds, of niceness"; abet = ? using <string> ...
[3 replies] Last: string class is a STL container just like STL vector. (by dearvivekkumar)
by rat
time() functionality and tm structs w/ pointers
 
I am writing a Rolodex-type program to store information like birthday, phone number, etc. I have defined a Rolodex structure, and then declared an array of Rol...
[3 replies] Last: Hey I have written one function which takes a string(since I am suing ... (by dearvivekkumar)
by Pelle19
Template trouble
 
I wonder why I get a compiler error if I uncomment the two operator definitions? Also I wonder why I get a compiler error on v.push_back(5) if I change the line...
[9 replies] Last: I knew about this - I have mentioned it in other questions on the same... (by guestgulkan)
by dearvivekkumar
Declaring struct/class local to a function
 
Hi, Is it correct to declare a class local to any function. Suppose I have a class like : class AnyClass { public: void FunctionA(); }; voi...
[2 replies] Last: The (current) C++ standards documents does say that local classes are... (by guestgulkan)
by guccimayne
REMOVE PLEASE
 
MODS PLEASE REMOVE, THANKS
[3 replies] Last: How so? (by firedraco)
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