49,766 Topics
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| | [code] struct S { double operator()(char, int&); }; int main() { boost::result_of<S(char, int&)>::type f = 3.14; // f has type double } [/code] OS : win7 compiler :gcc mingw4.6.2 error message : error: no class template named 'result' in 'struct S'| error: expected ';' before 'f'| error: 'type' is not … |
| | hi, How to write code to convert to prepare one's complement and tow's complement in c++ |
 | Hey im a real noob at c++ and im trying to understand creating rooms setting a default and using a .txt file for room details. but i dont understand it. Im looking at some code from my lecturer and i dont understand were the wiz0-2.save comes from can some tell … |
| | Hello everyone in this activity i should use if, else if, Boolean, for loop, do while loop ok here is the OUTPUT i must do: GRADING SYSTEM! 96-100 =1.00 94-95 =1.25 92-93 =1.50 90-91 =1.75 88-89 =2.00 86-87 =2.25 84-85 =2.50 82-83 =2.75 80-81 =3.00 78-79 =3.25 75-77 =3.50 74-below … |
| | Passing Managed ByteArray to Native C++ DLL Anyone could help regarding passing ByteArray containing image data from axis camera to Native C++ DLL, Both compile OK, but DLL does not write ByteArray data to file?, just wondering if this is the correct way to pass ByteArray's to C++ DLL's here … |
| | I am using window 7 as a operating system and i run this code in same os it shows the problem related to file handling but this problem wasn't occurred on xp and vista whats the problem ........???????????? try to run on win 7 and xp you will get the … |
| | i am trying to print multiplication table by using for loop but it is showing only the last one instead of displaying all. :( [CODE]#include <iostream> using namespace std; int main() { int i,j, k; cout<< "enter i value"; cin>> i; for(j=0;j<20;j++) k=i*j; cout<< k <<endl; return 0; } [/CODE] |
| | I have created a program to generate a set of characters in an array. The objective is to move all vowels generated by the array to the left, for example: given the following array: A B C D E F G H I J K L M O P Q … |
| | I am working on a WIN32 (not MFC) project. Currently it uses the default XP and earlier file dialogs. In attempting to add the option, under Win7/Vista, to use the new-style file dialogs, I have come to a stumbling block. The only code examples I can find come from here: … |
 | Hi all, I'm having a problem here!! I've attended a lecture on Implementation of stacks in c++ using arrays and it wasn't really hard to understand, but now I'm supposed to know how to Implement a stack using linked list, that's the problem. help please?:confused: |
| | In a course, a teacher gives the following tests and assignments: A lab activity that is observed by the teacher and assigned a numeric score. A pass/fail exam that has 10 questions. The minimum passing score is 70. An essay that is assigned a numeric score. A final exam that … |
 | [CODE] class Rectangle { private: int num; public: int method1(int,int); }classOne; int Rectangle::method1(int num1,int num2) { classOne.num = (num1 * num2); return (classOne.num); } int main() { Rectangle* one = new Rectangle(); cout << (one->method1(2,10)); NewClass* newClassPointer = new NewClass(); //I want to access NewClass here.... } [/CODE] [CODE] NewClass::NewClass() … |
| | I'm trying to make a Palindrome program, that basically returns whatever you enter, just backwards. For some reason, the cNewArray is not only couting the original array backwards, but also the original array. For example if I enter "Hello" it returns "Hello = olleHHello". I'm very new to referencing pointers … |
| | I am trying to read integers from a txt file and then read the values looking for similarities. I am initializing an array as all 0 however, after I have read from the file and output all the variables, there are random numbers displayed in the array and I don't … |
| | hey guy's I'm relatively new to C++ and I've been asked to make a Caesar Cipher. I'm supposed to take an encrypted .txt file and output it's decryption. I've sort of got an idea of my flow as shown below but I'm confused as to how to transform capitals in …  |
| | I've just kind of gotten bored reading over learncpp.com repeatedly, so i decided to attempt to make a couple small programs for my own enjoyment ( and to really test what I'm capable of ). I have been making this little game that I call Implicit Explicit. It's basically the … |
| | I'm trying to run a program with 3 levels:1st Menu, 2nd Input and Output and 3rd Calculations. But it keeps me giving me permition denied and Id returned 1 exit status when I try to compile. any suggestion? here is the code [ICODE]#include <stdio.h> #include <stdlib.h> #include <math.h> int calcpercent … |
| | hey guys, trying to run a program here but my compiler reads something like this 1>------ Build started: Project: ati, Configuration: Debug Win32 ------ 1>Compiling... 1>ati.cpp 1>Compiling manifest to resources... 1>Project : error PRJ0003 : Error spawning 'rc.exe'. 1>Build log was saved at "file://c:\Users\TEMP.STUDENTS.002\Documents\Visual Studio 2008\Projects\ati\ati\Debug\BuildLog.htm" 1>ati - 1 error(s), …  |
| | I’m creating a Windows Form Ap with Visual Studio 2008. The Ap has a few selection boxes and buttons that trigger “things” to happen. The form also has a “feedback” area where I will display progress to the user. OK, that should be vague enough – SMILE. I want to …  |
| | I have a main loop that parses winsock input. Once the parsed input has been received, it creates a thread and passes an array element id to a global array of names to the thread. The thread then downloads the requested file, but first checks to see if it already … |
| | This is codes snippet from our codes [code] void testSmartAssign() { boost::shared_ptr<int> A; std::auto_ptr<int> B(new int(9)); A = B; } [/code] Is this kind of assignment well defined? Thanks |
 | /* I write this pro in single linked list useing stuck how i convert it to class.. #include <cstdlib> #include <iostream> #include <string> #include <sstream> using namespace std; struct studentinfo { string FName; string LName; int no; int age; struct studentinfo *next; } *head=NULL; void add_studentinfo(int s); void print_list(); int … |
| | hi I'm new I got some questions about bubble-sort, so I registered here. I'm currently working on this program (bubble-sort) so I looked up some example codes and I found this here, which is practically the right thing I'm looking for. But I have some questions, like 1. How would … |
| | Can someone please tell me why I am getting an error message saying 'temps' is uninitialised??? [CODE]#include <iostream> #include <string> #include <fstream> #include <sstream> #include <cmath> #include <iomanip> #include <cmath> #include <cstdlib> using namespace std; struct record { string websiteUrl; double revenue; int hits; }; struct totals { double totalRevenue; … |
| | I am trying to learn about marshaling structures and DLL's. [URL="http://msdn.microsoft.com/en-us/library/ef4c3t39(v=vs.80).aspx"]I'm following this example[/URL]. The code builds and compiles just fine. But when I run it, the lines where the call to the function is returned; it makes the call to the function from the DLL, goes through it, but … |
| | Hi Guys, Im completely new to this website and quite new to programming, Currently im doing Programming at college, Due to some unforeseen circumstances i had to miss a few weeks at college, Could someone please help me with a problem? I have been trying to figure it out on … |
| | I'm new to programming and C++. I've managed to succesfully insert multiple nodes from front. Problem is that when printing it starts with the latest node and goes "backwards". I would like it to start with the first node and print forward. Therefore I would like to insert new nodes … |
| | Hey guys. So I'm doing this project for my end-of-year exam and it's running. But I can't seem to go further beyond a point. This program asks the user as series of questions and then analyses the symptoms to give the result ie, if the user is diabetic or not. … |
| | [CODE] #include <iostream> #include <fstream> #include <string> using namespace std; int main() { oneclass.hello(); return 0; } class one { private: int num; public: void hello(); }oneclass; void one::hello() { num++; cout << num; } [/CODE] Could anybody please please tell me what is wrong with this code. I think …  |
| | I’m writing a Windows Form Ap that manages a series of website. I created a website class then pre-loaded std::list<WebSite> from an INI file. Now I need to use that list in other places in the code so I tried to move it into the private member area and got … |
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