51,593 Topics
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| | Hello, I happen to be a novice in the realm of C++, and I'm currently confused due to this error when trying to run my application: "Assertion Failed. Expression 'stream != NULL' ". I've looked it up, and nothing that comes up can answer why it gives me said error. … |
 | Has anyone tried to write [URL="http://support.microsoft.com/kb/307398"]this tutorial [/URL]using VC++ 2008 Express? The article claims to be written with VC++ 2005. But I thought 2005 and 2008 used compatible versions of CLR language. I'm getting all kinds of compiler errors -- for example [icode]String* str;[/icode] instead of using [icode]String^ str;[/icode] and … |
| | Please need some help on what servers in windows/linux can c++ applications be deployed? Is the .exe file deployed or a library is created out of the application for deployment? thank you |
| | I have to open a file whose name i am constructing by concatenating various inputs from the user. If I write: [code] string s = "filename.csv"; ofstream fout; fout.open(s,ios::app); [/code] it gives error for using s in fout.open(). It says it is a wrong form. I need to use a … |
| | The problem that i couldn't know if the mistake from the code or from the compiler? i have been setup cygwin.........as starting to learn Linux and into it as a start to learn c++ i want to compile a (hello world) code ================== [code] #include<iostream.h> void main() { cout<<"helloworld"; } … |
| | I'm a newbie to C++ and am wanting to make a game where Zombies come after you and you slay them, along with jumping, running, shooting, stabbing, well you get the point but idk how. also i have a main menu done but i don't know how to preview it … |
| | Hello, I am trying to compile a set of files. I got fustrated to the point of taking the actually instructor files from the book and compiled them. I am using AndLinux and the g++ compile to run my programs. If anyone is familiar with the book "Accelerated C++" I … |
 | Here is my final product: [code] #include <iostream> #include <fstream> #include <iomanip> #include <string> using namespace std; void printGrade(int oneScore, float average); void printTable(int scores[], int id[], int count); float computeAverage(int scores[], int count); const int MAX_SIZE = 21; void readStudentData(ifstream &rss, int scores[], int id[], int &count, bool &tooMany) … |
| | If anyone have "bus reservation system" c++ code in classes format then please give it to me.  |
| | [code=CPP]#include <iostream> using std::cout; using std::cin; using std::endl; void Calculate( double ); int main() { int worked; double salary; double pay; cout << "Enter the hours worked: (-1 to end)" << endl; cin >> worked; cout << "Enter the salary: " << endl; cin >> salary; while( worked > 0 … |
| | Hi Guys, Please help me in doing this. I am trying to read a file using fstream, but my prof wants me to do the same using hash table, which i have know idea. Please tell me hw can i do the same. The file contains huge data like the … |
| | Hello again, My assignment is to calculate a 10% bonus based on sales figures. I have to use a main() function, obviously, and 3 void functions, getSales(), calcBonus(), and displayBonus(). I'm pretty sure I have the functions coded correctly, I'm just having some issues getting them to actually run correctly …  |
| | I've searched for days on how to find the correct way to convert a string to a float and then double the user entry. Any help would be appreciated. Thanks. #include <iostream> #include <cstdlib> using namespace std; bool FloatInput(char []); void main() { float floatValue; char buffer[100]; bool validInput; do … |
| | [code] #include <conio.h> #include <stdio.h> #include <iostream.h> #include <string.h> #include <graphics.h> #include <stdlib.h> #include <ctype.h> //#include <dos.h> typedef enum{false,true}boolean; static int p = 0; class a { char busn[5], driver[10], arrival[5], depart[5], from[10], to[10], seat[8][4][10]; public: void install(); void allotment(); void empty(); void show(); void avail(); void position(int i); } … |
| | Hi, I'm working on a program to convert Celsius to Fahrenheit, but I have a problem when I run a check to make sure that input is not a letter. My problem is that if the user inputs a 0 it catches it with the [code=C++] if(num == 0) { … |
| | Hello, I had to creat the following code that displays a table depending on the number te user entered. [code] int main() { int n = 0; const int base = 4; std::cout << "Enter max: "; std::cin >> n; std::cout << " "; for(int i = 1; i<= n; …  |
| | Hi, I'm looking for some help with this short program I am writing... I'm trying to make the sure that the user enters a number when it asks for the temperature in Celsius, and when the user enters a number it works. However if a letter is entered it all … |
| | Hi, How do I use the generator in the file? I keep randomc.h as a header file in the Visual c++ project. My project has several header files and several .cpp files, many of which require to use the random no. generator. I have copied all the files in the …  |
| | I've tried like 100 different ways but I can't figure this out. I need each of these variables initialized and defined before they are used. Here is the bit of code: [code] int i, a; char etxt[100]; HWND hwndListBox = GetDlgItem(hEdit, IDC_LIST); i = SendMessage(hwndListBox, LB_GETCOUNT, 0, 0); //gets the … |
| | Hello! I'm trying to make a command line program that converts Celsius to Fahrenheit, and then asks if you would like to convert another number. This is the code I have (below) however when it gets to the point of asking if you would like to convert another number, no … |
| | Hi I am trying to teach myself C++ windows programing, ie creating windows applications (is that GUI or API or neither :P). I know the fundamentals of C++ programming but looking at some windows code it looks really difficult. [B]Can you suggest any good books or maybe some tutorial sites … |
| | I know how to make random numbers. and How to make random numbers in a specific range. BUT!!! How can you display 'x' random numbers in a given range and make it so the output display lists the numbers in groups a 'y'. For example: I want to display 25 … |
| | Hi All User Please Translate C++ To Delphi Thank You Very Much <snip> |
| | i am wondering how to create a gui that is something like wxWidgets. I know how to use the windows api and all of that so i am not asking how to create a button or edit box but really am asking how to create a pixel on the screen …  |
| | I have to open a file named "axb.txt" I have user input a and b as strings i have concatenated the string using string str = a + "x" + b+ ".txt" now i need to open the file. it does not open with fopen(str, ios::app) because str is not … |
| | Okay, so I have my program almost complete. I can get it to do everything except use the computeAverage. I know it works because if I hard code the arrays, I can utilize that and it will work. However, I am having to utilize what I pull from a .txt … |
| | hi.. i need to read a file.. in tat file i ve to read all strings and compare it with the given string.. hw 2 read strings in file exculding whitespaces n compare it..? help me...!!!! |
| | [code=cplusplus] #include<iostream.h> #include<conio.h> float si(int p,int r,int t) { return(float)(p*r*t)/100; } int main() { int p,r,t,s; cout<<"enter the p,r,t"; cin>>p>>r>>t; float s=si(p,r,t); cout<<"simple interest="<<s; } getch(); } [/code] iam new to c++ and i was going through UDF's when i pondered upon this problem of calculatin the simle interest ... … |
| | How did you disable the Unicode, I used the same program and get the same errors, I tried to disable the Unicode by going to the properties of the program, and unticked the inheritance, but I still get the errors?  |
| | Hii Friends, I do not know how to use FILE for writing data. I have tried something but i missed something to write and i do not know what to write now to get data inside file. Help me plz. Regards, Shivi circle.cc [code=cplusplus] #include <iostream> #include "circle.h" using namespace … |
| | Hey C++ guru's... I'm pretty new to the C++ world and would really appreciate some help... ... I'm trying to build a general tree (a tree with one root and N children), I've written the code and compiled it quote/un-quote successfully... ...I say that because I am faced with a … |
| | I'm trying to declare a std::map that is keyed by a char and has a function pointer as a second parameter, these functions would be a member function of my class. But for some odd reason I cannot call the functions when extracted... So, I have a class A as … |
| | i need ur help to write c++ porgram... this is the topic of it """"" Write a C++ program that calculates the perimeter and area of simple geometrical shapes based on the user’s selection. Let the program handle the perimeter and area calculations for circles, and Parallelograms. The program should … |
| | Hi All: I have a large number of elements to be stored into vector or basic string(delimited by \n). I need to search for an element and I would like to know what is faster: A:[CODE]std::string str = "\nElement1\nElement2...element1000\n" str.find("\nElement3\n");[/CODE] B: [CODE]std::vector<string> v; v.push_back("Element1"); v.push_back("Element2"); .... std::find(v.begin(), v.end(), "Element3") != … |
| | HEY guys, I can't figure out why my code doesn't compile, I'm trying to read a text from a file, count the words. any help would be approciate it thanks [code] #include<iostream> #include<fstream> using namespace std; // global constants const int MAX_ROW = 150 ; const int MAX_COL = 80 … |
| | hi! I'm trying to get the following C++ class (contained in a DLL): [code] __declspec(dllexport) class ThreadManager { public: __declspec(dllexport) static UINT32 setThreadPriority(UINT32 tPriority); __declspec(dllexport) static UINT32 setPriorityClass(UINT32 pClass); __declspec(dllexport) static UINT32 setProcessorMask(UINT32 pAffinity); __declspec(dllexport) static UINT32 changeMATLABSeed(UINT32 inputSeed); static BOOL setHandles(HANDLE* thread, HANDLE* process); __declspec(dllexport) static BOOL testFun(UINT32 testInt); …  |
| | I was working on an assignment, and I had finished everything and was cleaning up the code by just adding some comments to it and everything, and when I tried to run it again afterwards, it came up with an error that said "Debug Assertion Failed!" It says "Expression: _BLOCK_TYPE_IS_VALID(pHead->nBlockUse)" … |
| | I have been working on this program for my class and I have everything working fine it seems up until I get my New Balance output. What I get for the output is below. Date Account Type Amount New Balance 06/19 9858-5420-3025-7452 P 5500.00 -2694.35 06/19 1111-1111-1111-1111 C 430.00 -2264.35 … |
| | Im new on this forum, i don`t really know if this should go hear or somewhere else. If i messed up well sry. Here is the problem im working for the first time in Turbo C, i have this proyect its a simple one but i still need help. The … |
 | I have this DLL code, but I cannot access function. Where am I wrong? main.h [CODE=C++] #ifndef __MAIN_H__ #define __MAIN_H__ #include <windows.h> /* To use this exported function of dll, include this header * in your project. */ #ifdef BUILD_DLL #define DLL_EXPORT __declspec(dllexport) #else #define DLL_EXPORT __declspec(dllimport) #endif #ifdef __cplusplus … |
| | Hello developers, I have been playing around with C++ and wxWidgets for a little time now and I think it is time to make a little useful program I am planning to make a CD ripper and Encoder (re-inverting the wheel purposely for learning) and I plan to use CDRip.dll … |
| | Alright, my homework assignment is by using separate function definitions convert a temperature from Fahrenheit to Celcius. I've looked over the whole chapter, looked at the examples, and am having trouble somewhere. My program will only convert one temperature correctly to Celcius, which is 32, because it always returns a … |
| | I was making a function to save info and it doesn't work. It's actually made up of 2 functions. I've eliminated my problems down to the second function and can't figure out what to do. Here is the function: [code=cplusplus] void DoFileSave(HWND hwnd) { OPENFILENAME ofn; char szFileName[MAX_PATH] = ""; … |
| | Hi, for a class, I'm trying to implement a separate-chaining hash table stored in a vector that contains pointers to vectors where the keys will be stored. This is basically what I have: [CODE=c++] typedef vector<string> KeyChain; vector<KeyChain *> Table;[/CODE] The problem I'm having is when I want to access … |
| | Please find the details of the code in attachment. I am new c++ student. Please let me know the fault. Regards, Shivi |
| | what's wrong with this code, when i try to make the pyramid, it's always the same height of the pyramid. and somehow onumber always has the value of 20, WHY??!! Here is the code and I'll also include a picture of how it looks. [CODE=c++] #include <iostream> #include <iomanip> using … |
| | Hey, [CODE] #include<iostream> #include<sstream> using namespace std; void manage(vector <string> scoreSheet) { int i; stringstream q; string z; for(i=0;i<scoreSheet.size();i++) { q<<scoreSheet[i]; q>>z; cout<<z<<endl; } } [/CODE] I expected this program to print the first word of each string in vector but is printing the first value over and over again,any …  |
| | Since the very first time I programmed c++ I've been trying to make a program that looks like this [CODE=c++] #include <iostream> using namespace std; int main() { char name; cout << "please type in your name >> "; cin >> name; if(name == 'kevin'){ cout << "hello bitch" << …  |
| | in c++ is it possible to have a maximum length of an input, say i am entering a number - is it possible just enforce a rule which says that only a 2 number integer can be entered? i.e 01, 02, 03, 10 20, 30 |
| | [CODE]#include<iostream> #include<vector> #include<sstream> #include<algorithm> #include<cmath> #include<string> using namespace std; class ComboLength { public: int howLong(string moves) { vector<int> cc; int i,j,k=0; for(i=0;i<moves.size()-1;++i) { if(moves[i]==moves[i+1]) //Error k++; else cc.push_back(k); } return *max_element(cc.begin(),cc.end()); } }; [/CODE] I get a segementaion error in line if (moves[i]==moves[i+1]) any idea why? |
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