51,593 Topics
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| | hello guys and girls, as it's going to be quite obvious i'm not going to lie to you, this is coursework - however i really struggle with the programming aspect of my course and although repeatedly reading chapters in savitch's c++ guide and trying to understand my teacher i'm finding … |
| | I'm having a few issues with my Pig Latin program. First, The program doesn't loop correctly. I need it to keep prompting the user for input until the user presses CTRL+D, but I can't figure out how. Right now, it never re-writes the line "Enter some text (CTRL-D to end):". … |
| | String is an object, but it can be initialize without (), like [CODE]string str;[/CODE] However if I define a user defined object, I must initialize it like: [CODE]myclass myobj(); [/CODE] How is it possibel to not use: () ? |
| | This question has largely already been posted, and I apologize for that. However, I cannot get the max an min values to change from anything except -1. I'd love to make them actually work; I feel like the comparison statements are correct. I know the counter is working properly, and … |
| | An integer is said to be prime, if it is divisible by only 1 and itself. For example, 2,3,5 and 7 are prime, but 4,6,8 and 9 are not. Write a function that determines whether a number is prime. Use this function in a program that determines and prints all … |
| | Hello guys, i need help. I just began to learn c++, and i have a problem. How to write a program, which count numbers in a interval from k to n. I now the program is simple but i just can t bring it to work. Im using the loop … |
| | Hi, I have the following piece of code. I do the following here 1)open a file. 2) Print the filepointer positon . I get 0 3)Read the file in a while loop till i reach the end 4)close the file 5)Open the same file 6) Print the file pointer position … |
| | Required to use PriorityQueue to implements Dijkstra’s algorithm for solving the single-source shortest-path problem for weighted graphs without negative edge weights. I have a wrong output of my program. Here's the code: [CODE] //Graph.h class Graph { public: Graph(int r = 1, int c = 1); // constructor void setCost(int … |
| | Hello to all ! i am encoding a class about rational numbers, holding the numerator and a denominator and all operators like are overloaded for it..it works all so fine ecxept for one wierd point: my cast-to-double operator is called at the times it is not called at all..for example … |
| | This is the first time I have done this, I hope I am doing it correctly. If not, guide me toward proper etiquette. I am a beginner, intro C++. I received a message from the compiler that I don't know how to fix. My question is where is the error?, …  |
| | Hail. I'm having trouble with this program...here is the discription... Description: Design and implement an application that creates a histogram that allows you to visually inspect the frequency distribution of a set of values. The program should read in an arbitrary number of integers that are in the range 1 … |
| | Hi Would any one tell me how can I generate a random permutation of N numbers in c++? Is there any algorithm in STL for this purpose? Thanks in advance |
| | Hi guys, I would like to convert a string date into seconds using only the standard library. The date format is like this: Wed Dec 02 12:23:09 +0000 2009 and I would like to convert it to seconds. Is it possible to just use only the standard library? |
| | Ok, so I need a little bit of help with a program i'm writing. Let me give you the details. The user is suppose to enter two sentences with all lower case letters and have the first letter of each sentence become capitalized. Here is the code so far:[CODE] // … |
| | Hi guys, I am working on progamm about reading some words in MySQL then display the results during run time command.But my code keep giving some MySQL errors about I can't read it. Am I making some mistakes with sequence? I am pretty new in C++. [code=cplusplus] //---------------here is code … |
| | Hi, I'm having trouble with getting my cuda program to work, apparently it is something to do with the way I call the kernel and what I'm telling it to do compare to what I want it to do. OK, what I want it to do is (for now): *input … |
| | How can i sort a vector which has strings and while sorting it to change data simultaneously in 2 other vectors? eg. vector 1 vector 2 vector 3 NewYork 25 1935 Athens 43 1990 I want it to be like this: Athens 43 1990 NewYork 25 1935 I want to … |
 | Consider two classes, PersonClass and LawyerClass. If LawyerClass derives from PersonClass, you can create a PersonClass* as a LawyerClass, like [code] PersonClass* Person = new LawyerClass; [/code] then you can convert it to a LawyerClass* with [code] LawyerClass* Lawyer = static_cast<LawyerClass*>(Person); [/code] However, if you don't know that the person … |
 | Hi :) I was trying to find the max length in my multimap. here is how I define it: [CODE]multimap<int, string> mm; multimap<int,string>::iterator it; mm.insert(pair<int, string>(some_int, myvalues));[/CODE] Now the main part that I want to discuss is this. I have created 2 functions to find the size of records in … |
| | I am writing a program that can read in statistics from a basketball team. The file lookes like this: Joe 3 114 9-19 1-3 2-4 3 15 4 2 1 2 3 21 I have created an array of structs to read all of them in I used ifsteam infile2("file.txt") …  |
| | Hay Everyone i'm a new member of this fantastic fourm , and i have some problems with programs i'm really stuck with:'( , so guys i really appreciate any one who can help me with anything, and here is the problem , Write a program using a set of functions …  |
| | Hi , I want a C++ implementation for a LR parser example from this book: Concepts of Programming Languages, 8/E - Robert W. Sebesta here is the example .pdf: [url]http://www.spelman.edu/~compsci/cis346/lecture3_cis346_Chapter4.pdf[/url] its begin from page 6 .. please help me .. thanks .::. Sultan .. |
| | I'm making a text-based RPG (Sure you haven't heard that one before ;)) So I'm trying to randomize the damage that the player deals. I want the damage to be (strength*2) + a random number between the variables mindamage and maxdamage, how do I do that? |
| | I can't figure out, or google how to do this =/ I just need something to put my computer to sleep [CODE="cplusplus"] #pragma comment (lib, "PowrProf.lib") #include "stdafx.h" #include "windows.h" #include "Powrprof.h" int _tmain(int argc, _TCHAR* argv[]) { SetSuspendState(false, false, false); return 0; } [/CODE] I get this error: 1>Sleeper.obj … |
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 | Hi everyone. I am creating a small windows form application using Visual C++; and I would need to delay a loop by a second. Sleep() doesn't work.(Not sure why) Is there a way I can use the timer? Any suggestions on how can I do that? Thanks in advance. :) |
| | Hi there, I'm doing a camera caliberation program which will detect whether there is stain on the camera lens. i have a program that can detect the stain and display but how do i go about detecting the position and also CIRCLE the position whereby there is stain. any suggestion? …  |
| | i really need help!!! i am a noob, just getting started in c++ and i need help sorting my array. please don't suggest me std::sort because i don't really know how to use those! sorry i am such a noob, but i prefer it the simplest way possible please help … |
| | Hello, I have an app that use an excel component(ocxt.com). This component have a strange behavior, which I reproduced it with Interop.Excel. Bellow is the functions with I open and close an excel file programatically: [CODE] private ApplicationClass app = null; private Workbook book = null; private Worksheet sheet = … |
| | Here is the LinkedList.h file: [CODE]// LinkedList.h -- class for a linked list as a data structure template <class DataType> struct Node { DataType info; Node<DataType> *next; }; // LinkedList maintains a current position in list after each function call // If an object of a struct is used for … |
| | I keep getting a Segmentation fault error when i run my program, i read that this is an error with memory or somthing, i was hoping someone could point out where the problem in my program is. My code is below. [CODE] #include <iostream> #include <vector> using namespace std; class … |
| | would someone help me learn stl ? i am new to c++ and i am learning myself so its getting very hard to understand...... thanx everyone in advance.... |
| | Hi All, I am facing a serious problem. I need help! There are cases for QueryInterface method in MSDN one amoung them is, a call to QueryInterface for a pointer to a specified interface succeeds the first time, it must succeed again, and if it fails the first time, it … |
| | Hi All, I have an assignment that asks : Write a program that prompts the user for test scores (doubles). The user enters -1 to stop the entry. After all of the test scores have been entered, calculate the average, the highest and the lowest test score. Use the code … |
| | I'm writing a program that builds a graph and detects articulation points. I'm stuck with the root vertex and how to find out if it is an articulation point. By definition it is iff it has more than one child but for example: [CODE] 0---1 |\ | | \| 2---3 … |
| | I have most of the program written, but I'm stuck on the 2 dimensional array. Here is the code I have so far: [CODE]#include <iostream> using namespace std; //function prototype int calcTotal(); int main() { //declare variable and array int total = 0; int sales[6][2] = {{12000, 10000}, {45000, 56000}, … |
| | I'm working on a small C++ project that requires using classes. I'm supposed to create a super class Animal and the sub classes Fish, Bird and Insect. In the main function, the object of type animal is created. I need that object to 'become' one of the 3 other types … |
| | Hello, I've checked a recent Game of Life thread and unfortunately it did not address my problem. I'm trying to manipulate life based on how many cells have life. I'm assuming that it's the way that I'm doing the counting that is messing up the problem but it could also … |
| | Hey everyone, I'm new on the forums and I'm also quite new still too C++ programming I'm taking a course in it in college (to meet my requirements) Its not my major and I'm terrible at math to boot. I have an assignment where the professor wants us to make … |
| | This is what is asked of me. "Create a flowchart and write a complete C++ program that declares a 2 dimensional integer array of size 10 rows and 10 columns. The program should use two nested for loops to fill the array with the even numbers beginning with 2 in … |
| | Hi, I have some problems with this code.I must make a add person.delete person or search... I make everything but if i add someone who is added before the program is crash.. Can someone to put new element on the exact place... for example if i have 1 and 10...i … |
| | Hey everyone. I'm getting REALLY frustrated with this program and I've been working on this problem for too long now. I am building an undirected and unweighted bi-connected graph class which detects all the articulation points. I am able to detect all the articulation points but I cannot figure out … |
| | Hello, part of my project I'm working on needs to have me count the amount of letters in a file. This is what I have so far. Any one help? [CODE] #include <iostream> #include <fstream> using namespace std; int main () { char c ; // start with a blank … |
| | My code compiles and is working correctly, but I was just wondering if anyone could check over it and suggest any improvements or correct things I've done that are bad in the c++ world...anything at all? Thanks in advance! [code=php] #include<iostream> #include<vector> #include<cmath> #include<iomanip> using namespace std; //Declare functions void … |
| | [B]Hello everyone!!![/B] I have the following pseudocode and I'm not exactly sure how/where to plug it into my code. I am still very lost concerning programing so please bear with my ignorance...:) /* pseudocode for Binomial Coefficients */ int binomial(int n, int k) { If (n < k) Then return … |
| | Could someone help me with this? [CODE] ifstream readfromfile("stats.txt"); readfromfile >> lvl >> xp >> str >> spd >> acc >> hp >> endl >> inventory[0] >> endl >> inventory[1] >> endl >> inventory[2] >> endl >> inventory[3] >> endl >> inventory[4] >> endl >> inventory[5] >> endl >>inventory[6] >> … |
| | I have a vector filled with names such as John Doe Jane Doa etc. I need to write a function which deletes what is input via the user [CODE]void delete(vector<string>&name) { string FName, LName; cout<<"Enter first name and last name to be deleted"; cin>>FName>>LName; }[/CODE] ie input: John Doe and … |
| | I'm sure I'm missing something simple, but would like to ask if someone could set me on the right path. We have to write a program that requests the hours worked in a week, and a pay-rate, and then prints the gross earnings, taxes and the net pay. [CODE] #include … |
| | I'm working on a project implementing Dijkstra's Algorithm. The project involves reading from an input file and the format of the file is as follows: - The first line of the file tells the number of total vertices and the number of edges (n, m) respectively. - The rest of … |
| | Hey, I'm kinda a real newbie. I know just the basics. Can anybody help me with an include file or a command, I don't know something like: [CODE]system("output C:\Windows\picture.bmp")[/CODE] or even: [CODE]#include <help.h> int main(){ image C:\\Windows\\picture.bmp; system("pause"); } [/CODE] anybody know how to help? I'm really good at reverse … |
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