49,757 Topics
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| | Hi there and thank you in advance for your help in advance. I am having problems with my page replacement program with taking the integers from an input file and putting them into an array. I need it in format [Next page in] | | | | (current pages between … |
| | Hi. i am taking a C++ intro course and one of my projects is to create a program that will give me the beta 0 and beta 1 of a regression. The user must input a the following: how many data sets?, each of the Xs and each of the … |
| | I'm trying to implement operator overloading. I think I was successful with overloading the input and output function. Do I need to keep the current functions and add functions such as [code] bool operator == (const HugeInteger&, const HugeInteger&); [/code] My program is listed below. Please point me in the … |
| | So what I'm supposed to do is take a text file and read it into a set of string vectors. The file has three types of data in it, in this order: title, artist, genre. I need to read it into the vectors so that each data type is only … |
| | How can i read in data in different functions without losing the stream's place in the file. i.e function a and function b both open a data stream to read in first and last names from a file. however function b reads in the first name as well rather than …  |
| | Here is the background: I am working on a project in which I have a base class called Account. In this base class I have the functions updateValue(int num_of_years) and void toString(); Next I have three subclasses of this base class, which are MutualFund, Bond, Buried. Each of these is … |
| | hi. i have a program that i am having some troubles with. if anyone could give me any suggestions, it would be greatly appreciated! : ) i have to edit the main some more to get this to actually work. and i also have to add info into the function. … |
| | In my cdrom class I have a member function called returncost, and a private data member cost. [code] float cdrom::returncost() { return(cost) } [/code] Later, in a free function I call that member function to calculate a total cost and average cost. [code] void showcosts (cdrom &cd1, cdrom &cd2, cdrom … |
| | Im trying to put a while loop in here and when i do i get tons of errors. but when i run it with out the while loop it works. this program inputs the first and last name and puts it as last, first. and uses strings for that and … |
| | [code=cplusplus] bool fun1() {if (root) return doFun1(root); else return false;} bool doFun1(Node *ptr){ if(ptr->left) doFun1(ptr->left); if(ptr->right) doFun1(ptr->right); if(ptr->left) doFun1(ptr->left); ptr->data=ptr->data*7; if (ptr->data>500) cout<<.5*ptr->data<<endl; else if (ptr->data<50) cout<<5*ptr->data<<endl; return true;} int main( ) { Tree t; t.insert(14);t.insert(13);t.insert(31);t.insert(27);t.insert(12); t.fun1(); return 0;} [/code] I am trying to trace through this and the output … |
| | If I have a class called cdrom, and one of the member functions is loadinfo, what is the difference in these calls? cd1.loadinfo cd1->loadinfo I ask because my compiler is choking on the first and actually asking me if I meant to do the second. |
| | Hi , this is the first time i ask for help here i have been searching for a good place to ask and i found daniweb i hope i be right of what i am thinking . and to get help from you guys. thank you here is the question … |
| | I'm working on a program that reads a file of scores and then outputs the number of scores in certain ranges. I've got it to read the input file (scores.txt) which is set up as follows; 76 89 150 135 200 76 12 100 150 28 178 189 167 200 … |
| | Hi All, I am a student and this is a project I am working on. The main idea is that this program will calculate the number of months it will take to pay off a loan. There are catches in place to only allow positive entries and to check to … |
| | I'm using the directive pragma once in two header files. Both headers use vector, iterator, iostream, and string (and using namespace std). Some things may seem redundant and inefficient but it's the way our instructor wants us to write it. Anyways, in my file register.cpp, I want to include both …  |
| | Specifically, specific elements. A project requires us to delete elements in a vector via course number. I assumed one would use an iterator, so that being said, would this work? [CODE]void student::drop_course(int d) { vector<int>::iterator f = find(c_id.begin(), c_id.end(), d); vector.erase(f); cout << "You have deleted course number " << … |
| | I am working on one-dimensional arrays for class assignment. I don't think I have this right. Can someone check this: The question is: Write the c++ code that will count the number of elements in an array (named number) of base type int. that are equal to a key value … |
| | hello there! i'm new n i need real help! i got this homework and i have to have it done before tomorrow! i tried so hard n i cried all the last night *cries again* i hate queues!!!!! anyway plz help me if u can. i have to write 3 …  |
| | What will happen if caught exception when new a object? For example: [code=c++] ClassTest* ptr = 0; try { ptr = new ClassTest; } catch(...) { } [/code] if the constructor of ClassTest throw exception, what will happen? will ptr == 0 ? some memory leak? |
| | I am creating a game, without using any game related libraries, only the "standard" (read aside) ones and an [URL="http://www14.brinkster.com/aditsu/dev-cpp-faq.html#conio"]edited conio.h[/URL]. So I get to use getch(), kbhit() et al. My problem is with kbhit(), is there no way of resetting it, so that I can reuse it? Aside : … |
| | [code]class Customer { private: char name[50]; int acc_no; char acc_type; float balance; public: void getData(); }; int main() { Customer cust; cust.getData(); cust.getData(); } void Customer::getData() { cout<<"Name : "; cin>>name; cout<<"Acc No. : "; cin>>acc_no; cout<<"Acc Type : "; cin>>acc_type; } [/code] The second time I call the function … |
| | Hey guys i have a header file and now i am writing the implementation file and defining the constructors..i am having trouble with 1 but.. void bitmap:save (string filename) { } //The bitmap representation is written to filename. The bitmap file will consist of two positive integers R and C … |
| | Hi guys, I'm both new here, and new to c++ so be gentle! Over the past short time we've been looking at c++ on our course, but I don't believe it has been taught too well, and I'm struggling to understand what should really be basic concepts? An assignment we've … |
| | [code] double classAve (double g, int i); char gradeLet (double z); int main () { int ans, count = 0; double grade, numTot = 0; cout<<"Do you have a grade to enter? (Yes = 1, No = 2) "; cin>>ans; cout<<endl; while (ans != 1 && ans != 2) { … |
| | how do i use a function without calling it from a different class? (i have more files in my project) i made a test function called dostuff() { } inside some random file outside a class. but when i want to compile i get this: Error 1 error LNK2005: "void … |
 | EDIT: I've got a while loop in my code, just now when player 1 goes to have his/her second attack the hp is reset to 99, [code=c++]#include <conio.h> #include <iostream> using namespace std; int main() { int p1attack, p2attack, p1hp, p2hp; char attack; p1hp = 99; p2hp = 99; system("TITLE …  |
| | i found this off some site and when i build it in vis c++, the errors are with the two random functions. will someone tell me why and how i can fix this. the random on line 15 and randomize on line 36. undeclared identifiers. [code] /* Jason Cordes */ … |
| | I was once trained in C and C++ and am now brushing off the cobwebs and relearning C++. I am restudying the Borland C++ Builder and realized I needed to know more C++, so I began restudying Visual C++...by Spencer and Perry. I am writing software to anazlyze lake water … |
| | Hi, Could anyone please check the following for me? I can't run it yet. Best Regards, zawpai |
| | I am having trouble implementing a sort function for this link list. This list works just fine. I just want to be able to sort by name. When I run the sort function I get back this; -------IN------- bb aaa aaaa aaaaa aa bbb b -------OUT------- bb bbb -------------- I … |
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