51,593 Topics
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| | Hi, i am using visual studio 2008, C++ MFC to do my program. I am doing serial communication. I have a GUI C++ program. At the beginning, i will ask user to choose the com port then connect it. After that, i will need to let the user change the … |
| | Hie all I am trying to make my game playabel over a network, Client/Server. I have managed to design the game, i have also managed to create a chat program whereby all clients connect to the server and messeges sent are all received and updated by the server to all … |
| | Hello, In the past I had written the following function to parse a string that was tab delimited: [CODE]void parseLine(string s) { string fid, src, dst, cap_e, cap_f, fare_e, fare_f; istringstream isstream (s); getline(isstream,fid,'|'); getline(isstream,src,'|'); getline(isstream,dst,'|'); getline(isstream,cap_e,'|'); getline(isstream,cap_f,'|'); getline(isstream,fare_e,'|'); getline(isstream,fare_f,'|'); }[/CODE] Now I need to parse a string where I … |
| | Hi, I need help in understanding nested loops. Here's my problem. I'm asked to write a code that emulates a cash register. Using only while loops and do while loops, and can be with the help of if/else statements. Desired output : Welcome to CrappyMart type (-1) when done to … |
| | #include <iostream> using namespace std; double average(int x); int main() { int a,b,c; cout <<"average is:"<<average(a,b,c); cin >>a>>b>>c; return 0; } double average(int x) { return (x+x+x)/3; } |
| | Only have Visual Studio 2008 about a week but just ran into something inexplicable to me. This include file (and others like it)... [CODE=C++] //DoTestData.h #ifndef DOTESTDATA_H #define DOTESTDATA_H unsigned int iCreateDB(TCHAR*); unsigned int blnMakeTable(SQL&); int GetRecordCount(SQL&, unsigned int&); unsigned int blnInsert(SQL&, TCHAR**, unsigned int&, HWND, int); unsigned int blnDumpData(SQL&, … |
| | How would you write a string that has "are" in it: I beleive this would be a wrong way ? String GetString = [B]"Hello how "are" you"[/B] |
| | class B is nested insider class A but it does not declare the class B as its friend. However, the member function void B::print(A a) can access to the private member data int a, b of class A. The books introduce the nested class must be declared as friend then … |
| | Hi all, I am having problem about file operations. There are a few numbers in my txt file. I want the program to calculate average of these numbers in the txt file. The code I have written is as below. Number of numbers in the file is 5. When I … |
| | I have adapted a program that implements a register of players and stores the players in a struct, with BIN file handling. Now it's not possible to use the records after they have been loaded from the BIN file. The compile is ok and both functions below are excuted without … |
| | Hello. First of all, sorry for making the other thread before looking more deeply. I did not make this mistake this time, though. I have a really odd error. I have no idea what might cause it. Here's the error (Gives me two of these). [code] \main.cpp(74) : error C2143: … |
| | hi i want to compile .c file as .cpp file using makefile!!. please some one help me to create makefile  |
| | hey...i'm having trouble passing a user define 2d array... [CODE] void genrand(int &game[][],int &size) { int i,j; for(i=0;i<size;i++) { for(j=0;size;j++) { game[i][j]=(rand()%100); } } } int main() { int size; int game[][]; cout<<"Please enter your Game Size"; cin>>size; genrand(game[][],size); return 0; system("pause"); } [/CODE] This is my code...i read in … |
| | Hi! I have been programming in FreeBasic for 2 years now, and decided to switch to C++ a few weeks ago. This means that I'm not completely new to programming. I downloaded Visual C++ Express Edition 2008, and have already read all 12 chapters of C++ Beginners Guide (well the … |
| | [code]include<stdio.h> #include<conio.h> void main() { char u,pp; printf("\n\n\t\t enter the username and password"); scanf("%c%c",&u,&pp); getch(); }[/code] what was wrong in this code, Its taking the username but its not properly taking the input of password. And my another doubt is how can i use string for this program instead of … |
| | Hi, I am still a newbie to C++ and ran into a strange problem - I am using a static instance variable in my class, as soon as I do so I get an error LNK2001: unresolved external symbol error message - however this only occurs when I am trying …  |
| | Hi, I knw there is a way to convert from 1 managed code to other, but i just want to know how cani use it, i have a code in vc++ 6.0 and i need it in c#.net form vs 2008. wat r the ways i can do it.. Thanks...  |
| | I am having a much harder time than I should trying to deallocate the memory used by an STL map. Some example code: [code] void mainfunc() { testmap(); testvect(); } void testmap() { map<int, float> testmap; for (int i = 0; i < 1000000; i++) { testmap[i] = (float)i; } … |
| | I got a set .net c++ 2003 source code, I need to call some of the functions from it in c# 2005, how can I do? I heard that .net c++ 2003 is managed code it can directly communicated with c#, but I dont know how to do, is need …  |
| | Hello, I have a class with as many objects I need. I am changing the value of some member variables individually here and there, however, now I want to be able to change one specific member variable of all objects e.g. bool visibility at once, so that all objects wll … |
| | Hi there all, Could someone please tell me how I could increase my precision for floating point arithematic? My requirement is that I add a very small value of the order 10^-7 with a relatively big value, say 36.63 and then I want multiply it with 10^7. The problem Im … |
| | Is it possible for me to typecast or convert a type [icode] IplImage* [/icode] to [icode] const char* [/icode] It seems impossible, but i would like to send a frame captured from webcam through a winsock socket directly through memory but the 'SEND' function only accepts type const char *. … |
 | HI, I was trying to learn more about I/O with files in C++ and I can't figure out why this program can't output to the file... [code=cplusplus] #include<iostream> #include<string> #include<fstream> #include<algorithm> using namespace std; char userinp; void print_interface() { cout << "Enter E to Encrypt" << endl << "Enter D …  |
| | Hello! I have a piece of software called X-Mouse Button Control, and its able to intercept mouse events. The website for my mouse had this instead of a driver specifically for the mouse. In the program, I am able to "Intercept" the functions of Leftclick, Rightclick, ect, globally for windows. … |
| | Hi! I'm trying to write a code where I call a number of programs, with each program's output being the input for the next program. [code] WinExec(run11, SW_SHOWNORMAL); //to execute program1 WinExec (replace2, SW_SHOWNORMAL); //to execute program2 [/code] Now the problem is, program2 starts running before program1 finishes, and therefore … |
| | Hey, guys! I need little help for finished my code. I have created the code for analize my text file. I have text file with 2 lines. The program counts the lines of my txt file, length of each line, upper and lower case letters. Code works perfect without errors. … |
| | Hi, I need to write a program that counts how many total iterations are processed in a heap sort. I wrote the program but I don't think it is working properly. I have an array 32 numbers. The sort should go through a total of 160 iterations, right? Since it … |
| | Hi, I have seen a program in a thread that write a program which displays its own source code... How this can be done?? |
| | hi,,,, all can anyone help me getting some topic for c++ project..... i m not getting an idea on which i can work and make a program or project in c++.... vibhu  |
| | i'm with a question related to string comparing...i'm trying to compare two strings (well char pointers in fact :)), im using _stricmp for case insensitive comparison, but even with the conventional strcmp i'm not getting the result i want. [code=cpp] if(_stricmp(value,gen_arr[i])== 0){ file.seekp(-1,ios::end); file.put((i)); file.flush(); file.close(); printf("Editing of field %s … |
| | Hello I have a program that prints a menu & the user is prompted to input a choice(1,2 or 3) if they input anything else, the output should be "Invalid Choice". [B] My Problem[/B] is that if a user inputs anything other than 1,2 or 3, then the program crashes, … |
| | A const member function is not supposed to operate the data member. However, it can operate the data member if it is a reference data type. Why can operate the reference data member even if the member function is constant? It is shown below: two classes: Bird & BirdHouse BirdHouse … |
| | Guys, I have this question, when I run this program, the program suddenly stop and tell me it cannot be runned, could your please tell me my error thanks. Here is the code: [code=cplusplus]#include <iostream> using namespace std; int main() { int student,subject; int marks[student][subject]; int i,count; student=5; subject=3; //Getting … |
| | Hi, I've just came across declaration of this form: [code=c++] void fun() throw(); [/code] Could anyone explain what is the pourpose of this and maybe someone knows good book with thorough explanaition on this subject. Thank you |
| | I've learned Java, C++, and most recently C ( Fall of last year). Seeing how there is a great deal of threads for C++ I'm thinking that I should go for C++. Which language do you suggest? |
| | Hi, is there any function or algorithm that can completely remove a string array element? For example, string mystring = 'x', 'xx', 'xx', 'xxx'; if I want to remove 'xx' and I know the position of 'xx' in the array, I want this : mystring = 'x', 'xxx'; Anything? I … |
| | Before i start my question, i must say i am very sorry for starting another thread for a similar question, as i have read many threads but i didnt really catch the exact answer i wanted. and again i am new and very sorry.(first post) i have been reading C++ …  |
| | Hello I have a function that should store random numbers in an array and also check if there are any repeated numbers. [B]My problem[/B] is that I cannot figure out how to 'repair'/get rid of repeated numbers & make them ...unrepeated numbers? :P Any advice on how I can alter …  |
| | I'm having trouble making a function that centers my results. I cannot find much information depicting how this works exactly. I've found small functions but nothing like I'd like to do. My whole idea is make a function so I can use it at anytime to center my string. Somethings … |
| | can anyone tell me how can i create a function like: [QUOTE]if ("the txt file is blank") dosomething;[/QUOTE] which is checking if the text file is empty and then do something.  |
| | Hello I have a function that takes in a 'word pattern' & a word & determines if the word contains the same characters in the same position as the 'word pattern'. [QUOTE]For eg; 'word pattern' = he??? word = hello - The function will return true because the word variable … |
| | hello everyone, this is my first post. I have been teaching myself c++ for the last few weeks and have gotten more familiar with some of it. i thought to myself it would be interesting to try writing up some code that goes through numbers to see if they are … |
| | Hi, I have a Windows GUI app that uses a thread for a computation intensive call. It works fine. From what I understand the thread is terminated when my thread function returns which means that I dont need to add a a termination to it. However, I don't want the … |
| | Ok so I am using Microsoft Visual C++ 2008 express edition to compile my programs. I have used this for a while now and i want to make a program that will open another executable file. I have done this successfully with system(), however whenever I put spaces in the … |
| | Hey, everyone! I've got small problem in this code! I cannot find a mistake in this code. I was playing many times by changing functions and values, but something wrong. I'm beginer in C++, but I would like to be professional. I never ask for codes, only help for explaining. … |
| | Simple program opens a text file and counts all the lines. Then it returns the pointer to the beginning of the file and starts pulling in the lines for data manipulation. The Problem: If the file "triangle.txt" ends with a newline everything works fine until the last [i]while[/i] loop which … |
| | Hi, im a student taking information tech. and im a newbie in this forum... i need help on the machine problem that my prof gave me... please help me i cant figure out what codes do i use..:confused: the number 5 is user's input... the output is this... [QUOTE] [B]Input … |
| | Hello everyone! I'm working on a little 2D Game, and I managed to make a 32x32 fill out my whole window :) and I also managed to override the whole 32x32 grass terrain with a 40x40 desert/sand terrain. But I can't figure out how to remove the images I applied … |
| | Hi, I'm am very new to wxwidget. After reading certain guides, I finally managed to set it up. But I'm still facing problems while executing my own 'independent program'. I'm using wxwidgets 2.8.10 and Visual studios 2008 express. This is what I did: [b]I used the below tutorial for building[/b] … |
| | the function is used to write things into a txt file. the function works quite well except there is a blank first line in the txt file. i think the error is caused by "ios_base::app", which always write to the end of the file. i want to write to the … |
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