51,593 Topics
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| | I created a small c++ program. Now i wanted it to create an .exe file. Once i compile, i get the exe file in my BIN folder.. but, the alignment of the files are not correct. Well i do get the correct alignment in turbo c++ compiling..(ctrl + f9).. but …  |
| | hi, i am writing a program that keeps track of the money in my debit card account. i need the program to be able to pull out a value (such as 1.56356) from a text file, round it to the nearest hundredth, and put it back into the file. any …  |
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| | I made several functions, and this one assignment keeps giving me "expected primary expression before '..., HELP!", what is a primary expression?, all my code is ok I have made different files for the different functions and im using extern but the void argument I think keeps giving me trouble …  |
| | thus iterators predefined functions? I am confuse between function and predefined functions. |
| | Hello, Where can I find the source code/implementations of STL library? Thanks. |
| | Hey, i found quite a few methods to [B]ADD TWO NUMBERS WITHOUT USING THE + OPERATOR[/B] , but this one is extremely weird. What does this printf statement mean ? What is %*d ????? [CODE]#include< iostream > using namespace std; int main() { int a,b,sum; scanf("%d",&a); scanf("%d",&b); sum=printf("%*d%*d",a,a,b,b); printf("\n"); printf("%d\n",sum); … |
| | Hi all! I get the following error while trying to compile this code /usr/lib/gcc/i386-redhat-linux/3.4.6/../../../../include/c++/3.4.6/bits/stl_numeric.h:116: error: must use .* or ->* to call pointer-to-member function in `__binary_op (...)' I am quite stunned because I've used before in a similar way Can any body give me a hint? Thank you in advance! … |
 | A little poll, which do you guys prefer to use for an application that uses 2 or more windows at the same time? MDI or modeless dialogs? And the reason why. |
| | Dear friends: I want to use the code block under open suse 11.4 system. But i do not know how to install it. I downloaded severay binary packages in the code block websiet, but none of them can work. Could sombody help me and give me a link about the …  |
| | Hi, i have written this block of code which deletes a record from a file, it works to some extent. i can delete existing records but at the second deletion and i display the file contents, i get some gibberish. also i cannot delete records which i have added to … |
| | Need help on this not for sure what I am missing I get a couple of errors!In included both the .h and .cpp information. [CODE] // Make sure the header file it not added more than once #pragma once #ifndef MYTIME_H #define MYTIME_H #include <iostream> using std::ostream; using std::istream class … |
| | For example if a memory address within the process had the value 1616 how could I find it ? |
| | Hello, I create a bst with the following code: [CODE]class BinarySearchTree { public: struct tree_node { string code; float min; float max; tree_node* left; tree_node* right; }; tree_node* root; BinarySearchTree() { root = NULL;} bool isEmpty() const { return root==NULL; } };[/CODE] The tree is sorted according to the min … |
| | Hi i'm attempting here to let a user select the id of a record he/she wishes to modify, find that record and allow the user to modify the record. this is as far as i got, after i locate the record and try to display it i get gibbrish as … |
| | Hi Coders, I was just trying out a simple singleton class. I have wriiten the below code. Now My que is : How do I instantiate the class from main function. PLS HELP :) [CODE] class MOV{ private:static MOV* inst; MOV(){cout<<"Hellooooooo\n"<<endl;} public:static MOV* get_it(){ if(!inst){ MOV *p=new MOV; cout<<"1st instance … |
| | Hi can someone help in in understanding the following code esp the "?".I cant understand how the output 9:10:5 as obtained. Thank You. The code is as followed: [CODE]#include <iostream> using namespace std; int main() { short hour =9, minute =10, second =5; cout << (hour <10 ? "0":"" )<<hour<<":" …  |
| | Ok This is my first post on this forum, and would really appreciate some help on an assignment... I have a 2d array and I need to add up all the numbers within the rows and the columns of the array. I'm really not to familiar with arrays or for … |
 | Could someone please explain how DWordSwapAsm works without a return statement? I've ran the program with breakpoints and [ICODE]i[/ICODE] gets changed even though there's no return value in that function.. how does this work? NOTE: I don't want help with the assembly code, just the function itself. [CODE]template <typename T> … |
| | I wrote a program that solves graphing programs. I am still very new to c++ and mt program is very very rough around the edges but my main problem is when the function returns the value to the main function it outputs random numbers in stead of the correct value. …  |
| | Hey guys, I'm new to this forum so nice to meet you all :D I'm really bugged by a weird bug that prevents my dialog from showing up, however the buttons show up twice, one overlapping the other. I saw other threads that discusses about this but I'm afraid I …  |
| | Hi guys.Does anyone who studied the implementation of stringstreams know if : [code] char c; std::stringstream ss; ss << std::fstream ("file.xml",std::ios::in).rdbuf();//this is eqaul in terms of speed while (ss.get(c)) {} //with this? std::ifstream f("file.xml"); while (f.get(c)) {} //or this? [/code] Thanks a lot. |
| | Hello, I'm doing a homework assignment from my Computer Science course and I'm having a bit of trouble. so far I have the code below and its producing errors, can anyone help? thanks! [CODE]#include <iostream> #include <string> using namespace std; int main() { char ans; int num; do { string …  |
| | When I try to call wglMakeCurrent, I get an access violation. My program only runs in one thread and one window, and I've got a valid device context and rendering context, I can't see what the problem is. I'm using VC++ 2010 and am running Widows 7 64-bit. [code=c++] static … |
 | Hi, Firstly, sorry about the large amount of code in this question. OK, so I'm making a C++ wrapper for the [URL="http://www.gnu.org/software/gsl/manual/html_node/Matrices.html"][icode]gsl_matrix[/icode][/URL] struct and its associated functions. To make my approach a bit easier to extend to other kinds of gsl structs, I have a template base class called [icode]gsl_base[/icode], … |
| | anybody know how to explain this??? set_difference(a.begin(), a.end(), b.begin(), b.end(), result.begin()); std::=is this algorithm??? how thus this code work??? vector<char>=how vectors work??? cassert=how thus this work??? back_inserter(setDifference)->i don't know how this code work??? |
| | Can anyone see why the function "option3" isn't calculating the values for pmt and totalRetirement? The program runs, but I get 0's for those values. If I remove the function and place the code directly into the case option, the calculations work. [CODE]#include <iostream> #include <string> #include <cmath> using namespace … |
| | hello all i am new over here and i have got a project to make sudoku in c++ but i am getting problem to write a code for finding solution for the soduko plz help |
| | Anybody know how to remove the duplicate characters in turbo c++. the output is like this: enter string1:abc enter string2:bcd result:ad  |
| | Hi there, I have joined this forum to ask lots of programming and hardware relevant questions. Well first one is this.... I am a C++ programmer. But I am trying to develop a program(.exe file) that will automatically run when I want to run it. Like I want to run … |
| | [B]I have problem when i Run my program .I can't see the results clearly it turns to fast to see, and it goes back to my program. Do you know how to solve this?please...[/B] |
| | Hello everyone ok straight to the point i have to do this a text or a word that is blinking and have color and while it is blinking it is automatically changing its color i know how to do a text with color and blinking but i don't know how …  |
| | Thus someone know how to solve my problem? I am going to make a program which is set_difference without using predefined functions??? |
| | First let me tell you what my program is doing. its basically a shopping list program. Whereby the user will input the values and it is then inserted into a text file. There will be 3 inputs (Item Description,Unit Price,Quantity Purchased) and is stored into the text file as (Shoes:$200:2) … |
| | Hi, i am trying to read from a random access file and display its contents to screen, however when i run the code nothing is displayed. I'm using a struct call "Menu" to store each record in the file and display it as the program moves through the file. Can … |
| | Hello all, I am having a hash_map with key: char *. I have defined it like this: [CODE] struct eqstr { bool operator()(const char* s1, const char* s2) const { return strcmp(s1, s2) == 0; } }; ... hash_map<char *,map<uint16_t,set<float>>, hash<const char *>,eqstr> symbol_hm; [/CODE] but I get an error … |
| | Im trying to get the smallest number out of a series of user generated numbers. i can correctly get the largest number but i always get the negative 99 for the smallest. im working out of a c++ book that does not provide solutions, i tried to catch the -99 …  |
| | Im a computer science undergrad student in my final year. its time for selecting my final year project. I have two projects in my mind which are as follows 1- create kernel for iPhone based on openiboot 2- create an iPhone to android code conversion tool The first project was … |
| | Hi all, I've been struggling with something for a number of weeks now and I just can't seem to solve it. I've got a bit of code that looks as follows: [CODE] class classA { public: classA( ); ~classA( ); classBBase* pointerToClassBBase; protected: private: }; class classBBase { public: classBBase( … |
| | Hello, I am trying to write a function that will read an array of numbers with the count of the numbers. I want to take the numbers and assign them to letters.Then print out the counts of A's, B's,C's,D's and F's. What i have isnt finished but im really frustrated … |
| | I am new to windows programming, I was trying to compile the following code and it gives me the following errors: C:\Program Files\Microsoft Visual Studio\MyProjects\hook\hook.cpp(14) : error C2065: 'KeyboardProc' : undeclared identifier C:\Program Files\Microsoft Visual Studio\MyProjects\hook\hook.cpp(22) : error C2373: 'KeyboardProc' : redefinition; different type modifiers C:\Program Files\Microsoft Visual Studio\MyProjects\hook\hook.cpp(30) : … |
| | Hi. I've made a code. The code is not 100% working, so i ned help with that. The tiny litle program is gonna work so it move the mouse, and then click with it. Both right and left click. And i don't know how to do that? [CODE]#include <iostream> #include … |
| | Hi all. I have code that looks like this: [CODE]void bubblesort (int arr[], string stringarr[]) { for (int i=0;i<5;i++) { for (int j=0;j<i;j++) { if (arr[i] > arr[j]) { int temp=arr[i]; arr[i]=arr[j]; arr[j]=temp; string strtemp=stringarr[i]; stringarr[i]=stringarr[j]; stringarr[j]=strtemp; } } } }[/CODE] It is a bubble sort trying to find the … |
| | hi, i have this code [CODE]#include <fstream.h> #include<iostream> using namespace std; int main (char argc) { for(;;) { fstream file; file.open("file.txt"); cout << "Enter new high score." << endl; double n2; cin >> n2; double n1; file >> n1; if(n1 > n2) { cout << "You didn't beat the high … |
| | Hi, I need the following headers. [CODE]#include "unistd.h" #include <sys/types.h> #include <sys/socket.h> #include <sys/stat.h> #include <sys/un.h> #include <sys/time.h> #include <netinet/in.h> #include <netdb.h>[/CODE] I been looking on the internet and find it hard to get downloadable versions of these headers. Instead, often I have to copy paste into a new file. … |
| | i got c++ off amazon, no solutions are provided for the end of chapter exercises my problem is with getting larger numbers to be only two decimal places. i know about setprecision and how it works for the smaller numbers but when i enter a large number for days worked … |
| | Ok straight to the point i have to do a code. The text or the word must have color and it is blinking but the text color should be automatic changing while it is blinking... I know how to put color amd make the text blinking but i don't know … |
| | I have a pure virtual base class called IVSystemDLL. I also have a class called CVSystemDLL which inherits from IVSystemDLL. When I create a [icode]new[/icode] CVSystemDLL and convert it to a IVSystemDLL *, and try to use one of it's functions, I get an access violation. It's not something inside … |
| | anybody know how to remove the repeated characters/// The output is like this.. string:aaaaanffddddgjkh result:afdgkh |
 | Hey everyone, I need some major help. I was going to get some development time in on one of my projects when I found that my installation of VS2008 Pro no longer wanted to compile any projects. I have tried making empty problems with just the int main(), nothing else … |
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