51,593 Topics
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| | So having some trouble with the error checking in the below function. Currently if you enter something wrong like r it returns "Pleae Enter next move" which is correct. My problem is that if I enter rrr it will repeat "Please enter..." 3 times instead of just once. I hope … |
 | I am trying to write a program that given two integers in two strings, substracts the second integer from the first integer and outputs it. 1. I read in two strings. 2. I reverse them (I am also adding them, I found it easier to add if they are reversed) … |
| | Hello! I am writing a program to overload ~ operator to reverse the given string. Here is my program. The problem message is that"Could not find a match for string::string(char). I am writing my program on linux. I can not use strrev function. [code] #include<iostream.h> #include<string.h> class String { char … |
| | I have an assingment in which i have to right an algorithim to get through a maze. I dont know where to really start with it. I know in the instructions it said to write it as though we used our right hand as a guide. in other words we … |
| | The following program accepts five student names and 4 test scores for each. Then calculates and displays the average and letter grade for each students. Well, that is what it is supposed to do. Judging by the long list of errors I get, it looks like none of my arguments … |
| | Hello, I am writing a program about gas pump. Here is my code [ICODE]class GasPump{ public: GasPump();// loads all pumps w/ 50 gallons, price is 2.00, 2.25, 2.50 GasPump(int l, int m = 100, int h = 100); //price is 2.00, 2.25, 2.50 GasPump(double pl, double pm, double ph); // … |
| | Here is my code including header files. My program is supposed to be a fraction calculator that handles exceptions such as division by zero, division by non-integer values, allows user to re-enter any values the program threw an exception for, and allows the user to continue to use the program … |
| | The type Point is a fairly simple data type that represents a point in the two-dimensional plane. Write a definition of a class named Point that might be used to store and manipulate the location of a point in the plane. You will need to declare and implement the following …  |
| | Hello, is there any way how to listen to communication on COM ports? Not to open them for using, deny any application from access to it, just to watch the data comming in and out the COM port. |
| | Friends, I was wondering if i could have a map of list . I was trying like this ..but i think i can't do like this. Any suggestion to do things like that or any alternative solution with help of c++. [CODE] #include <iostream> #include <list> #include <map> using namespace …  |
 | I'm just trying to figure out how this stuff works. I wrote this function: [code] #include <algorithm> #include <vector> double VectorMax(const vector<double> &a) { vector<double>::iterator pos; pos = max_element (a.begin(), a.end()); return *pos; } [/code] and call it with: [code] vector<double> Numbers; Numbers.push_back(3.4); Numbers.push_back(4.5); Numbers.push_back(1.2); cout << VectorMax(Numbers) << endl; … |
| | I am trying to use the for_each from stl algorithm. [url]http://www.cplusplus.com/reference/algorithm/for_each.html[/url] [code] #include <algorithm> #include <vector> #include <iostream> template <typename T> void OutputObject(const T &obj) { cout << obj << endl; } template <typename T> void OutputVector(const vector<T> &V) { for_each (V.begin(), V.end(), OutputObject); cout << endl; } [/code] I … |
| | Implement the following improvement to the quick sort and find out the percentage of key comparisons that can be saved in each case. Using randomly generated 1000 integers as input for sorting. Repeat the experiment 1000 times for each case to get the average percentage reduction in key comparisons. Case …  |
| | Ok I am having an issue with a program. I am in C++ II but my issue is I have not taken C++ I in over a year so I am at a disadvantage...we are working on a program and this is the information we were given and this is … |
 | can anyone suggest any tutorials for the vc++ resource editor? or can anyone tell me how to use it? i know how to design the forms but i dont know how to use it in my code any help would be appreciated :) |
| | Greetings, I am trying to create a gui, you guys helped me to find a great gui tutorial. Now I want to run another program in the background of the gui which will constantly monitor the time of the system. I tried using shellexecute in the file where I wrote … |
| | Friends, when i try to compile this program i am geting this error!! ListMemoryFree.cpp: In member function 'void example::add(LinkSlcMap*)': ListMemoryFree.cpp:41: error: 'm_link' was not declared in this scope but to me it seems fine.:) plz point out my mistake!! [CODE] #include <iostream> #include <list> using namespace std; struct LinkSlcMap { … |
 | Below I have a small portion of the code I have been writing for QT GUI. It is important for my design that I am able to use signals and slots within my GamePanel class, but for some reason it will not work there! When I click on the button … |
| | Hi guys, I'm suppose to make a database for a library system. can any of you help me out on how to assign an auto generated number for each record entered.I'm a bit new to the language. Thanxxxx.  |
| | I have a parent class and two child classes that inherit from the parent class. The parent class has a protected pointer to something, and a method to access that pointer. [code=cpp] class parent{ public: int* accessPtr(){ return ptr; } protected: int* ptr; }; class child1 : public parent{ public: … |
| | Hello everyone! I have a Huffman algorithm that is going along really smoothly and I've gotten to the part where I have store the paths to nodes in an array from a tree. This is what I have so far: [code] /*************************************************************** * huffTraverse * **************************************************************** * huffTraverse() reads in … |
| | enum Days { Sunday, Monday, Tuesday, Wednesday,Thursday, Friday, Saturday }; for( Days d = Sunday; d < Saturday; ++d ) cout << "d is: " << d << endl; C++ won't know how to increment d unless we define how that operator works for the type Days. Overload operator ++ … |
| | I found this while googling for something [url]http://msdn.microsoft.com/en-us/library/ms177203(VS.80).aspx[/url] I tried it (with g++) and it seems to be a syntax error - is this like something specific to Visual Studio or something? Dave |
 | Hi everybody Thanks again for your helps in my last thread. Now, I have some more problems. :( 50 Errors for this program. Certainly, a basic problem within the structure of class "Block". This assignment is all about "Class and objects". We can use functions, but no arrays. [code=cplusplus] #include … |
| | Can someone help me with what I've done wrong with the character count function? it should be returning abcdefghijklmnopqrstuvwxyz ABVDEFGHIJKLMNOPQRSTUVWXYZ as 52 but it is coming back as 136088??? [code] #include <iostream> #include <cctype> using namespace std; const int STRINGSIZE = 100; void getString(char string[]); void reverseCase(char string[]); int numGraph(char … |
| | Hi, I have done this program that calculates the average and letter grade of 10 grades, but i would like the program to ask the user how many grades he want to enter. plz help, I have tried many ways like -- [CODE] int size = 0; Cout <<"How many … |
| | i want a way to do validations for a String (the text should contain only characters, and not _ @ or any number) .. i found a code that does validations for integers, but not for strings.. Please could u, send me the code to conduct validations for Strings,, i …  |
| | Hello there , i've got a problem , i made this program for a Football league stats sheet, but the program needs to grab the highest and the lowest value of each teams in age / weight (poids) / height(taille) i'm having a really hard time and i'd like someone … |
| | Hi all, i m new to the programming storie, can any one please help me? i want to write a program that allows the user to input the diamention (e.g heit, weight) used to draw the object shape. the program should then compute the area and display the shape based … |
| | Hi, I have a file of approximately 4.19GB. I want to get the totall size of file using code in VC++, Here is my code [code] FILE *fptrSampleVideo = fopen(filename,"rb+"); if(fptrSampleVideo) { fseek(fptrSampleVideo,0,SEEK_END); uncompressedVideoSize = ftell(fptrSampleVideo); } [/code] If the file is of small size, ftell() return position correctly and … |
| | Why won't this let me choose my own array size? Queue line[qs_pair] is what i'm concern about. As you can see, I have the user input from the terminal the size of the array. But when I compile it, it gives me an error on visual studio. line unknown size … |
| | Hi, I am using copy_n from GNU C++ Library under Ubuntu 8.10. My code is like this: [code] #include <ext/algorithm> using namespace std; void myfun(char * flags ) { char * flags_new = new char[3]; copy_n(flags, 3, flags_new);// both copy_n and copy would give not in this scope error. delete … |
| | Hi guys, have a school project that i am working on but i am just running into this one problem. Well its not really a problem its more of a me just starting the c++ course and i just wanted to do something extra to get some more marks. We … |
| | Hi, I make a try again on Link List in Visual C++ but got an error. The code is looking right but when I debugged the source, then I realize that when the LINKLIST constructor is called then the two Node type pointers *start and *last creates trouble. Please do … |
| | This is not a complete program, I have comments to omit the incomplete portions. After "Player One" enters a row (see lines 54-5), the program ends. It outputs the "Enter a column" and the board and ends. I don't see why. Any help would be greatly appreciated! (Output after runtime … |
| | Hi all, I'm just asking for help for my linked list sort function, I'm not including my entire program, as I'm sure my problem lies in my sort. I need to sort the linked list by rearranging the pointers, I was fairly sure I got the function correct. When I … |
| | Hello there, I'm creating kind of a GUI system, and I found myself in trouble when inheriting my base class in my other classes. This is the gui header: [code] #ifndef _GUI_H #define _GUI_H #define WIN32_MEAN_AND_LEAN #include <windows.h> #include <vector> #include <string> #define GUI_VERSION 1.0.0.1 #define TRUE 1 #define FALSE …  |
| | Ok, im making a Text Based RPG and well just look at my problem. [CODE=C++]#include "Library.h" using namespace std; //Constant Integers //Functions void StartGame(); void LoadGame(); void Berkshire(); void Game_Menu(); //Integers int Gold = 0; int Health = 20; int Energy = 20; int Mana = 10; int numItems = … |
| | [I]Modify the program so that it reads input temperatures from a text file (named temps.txt) instead of the keyboard. The file should allow one temperature per line. The program should end when the end of the file is reached. Modify the screen output statement so that it includes the input …  |
| | As part of a project I'm working on, I need to develop a program that can take in a sentence and convert it somehow (I'm choosing to convert into Pig Latin). At first I thought this was going to be a piece of cake, until I realized that after [code]#include … |
| | How would i go about converting this from dynamic to static, all me attempts so far have failed. [CODE] #include <iostream> #include <fstream> #include <string> using namespace std; struct Student { string name; int exam; int assignment; }; string readLine(istream& fin); string getPassOrFailString(int m1, int m2); Student* loadStudents(string filename, int& … |
| | greetings everyone, i seem to be having an issue with a function that has a reference n a value to do a loop. the nature of the prog, is to roll a dice (n) times n then count the number of time srand rolls an even num. for the most … |
| | Compiler errors: (In main) Line 9:cannot convert char (*)[3] to char* for argument 1 to void showboard(char*, int, int) (in showBoard) Lines 16, 17, 21, 22, 26, 27:invalid types char[int] for array subscript I don't understand these errors. I am trying to make a tic tac toe game, I have … |
| | hy can anyone help me out with this code plz [CODE] #include <iostream> //Declarations #include <iomanip> #include <fstream> #include <cstdlib> using namespace std; double SaleSlcdDep(); double SaleALLDep(); double AveSaleALLDep(); double HighestSaleALLDep(); double alphatest1(); double alphatest2(); double menu(); int main() { double sales[12]; // Sales Input for the 12 departments double … |
| | This progran is a frontend for the windows "taskkill". If i type the output directly into a command window, it works, but it will only kill taskmgr.exe from this app. Any thoughts appreciated. [CODE] #include <iostream> #include <cstdlib> using namespace std; int main(int argc, char *argv[]) { string computer,domain_user,password,imagename,command,force; int … |
| | For the last 3 days I have been trying to compile m assingment on visual studio 2008. Its giving me error: [QUOTE]Error 2 error C2143: syntax error : missing ';' before 'using' screen.cpp 27 Assignment_2[/QUOTE] This is the same error its giving me in my main: [QUOTE]Error 1 error C2143: … |
| | hi everyone, how can i react on a plugged in usb drive? (e.g. show a messagebox or whatever when a usb drive is plugged in) The whole thing needs to run under windows only (xp and maybe vista)  |
| | Hi, I am new to programming with Visual C++ and have been trying to get a simple program running - and having difficulties. What I want to write is a program which: - Can download an XML file from the web - Parse it to retrieve information held in specific … |
| | Hi everyone, I am new to this programming and I was wondering if someone, well anyone can help me. I have this assignment due in a few days and I don't know where to start. The challenge is: Evaluate if the word or sentence entered by the user is a … |
| | Hi, I would appreciate any help with the problem I am having. I am trying to read text from a file (currently just 'yes' or 'no') and print the out the results in this format: 1 yes 2 no 3 no etc. I have been able to write a some … |
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