49,761 Topics
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| | Hello, I am try to compile this code using gcc in ubuntu. I get the error 'btree.cc:(.text+0x55a): undefined reference to `std::cout' '. I thought if i added using namespace std; it would start working but i am still getting the same error. Any suggestion on how i can fix it. … |
| | Hello, I need some help with my homework assignment fir my C++ class, here is a description of the assignment: Write a program that reads this file and finds the longest word that contains only a single vowel (a,e,i,o,u). Output this word (there will actually be several ties for the … |
| | I am trying to write a summation to aprox. pi. I am using a for loop and I cannot figure out where I am messing it up. I keep getting "program has exited with code 0" [CODE]for(int N = 0; N <= 15; N++) {double x9 = 0.0; for(int n … |
| | Please excuse me if this has already been covered before. I'm a C++ beginner, and in of the problems I have to do, the input has to be like this: 1) A number n is entered. 2) n number of strings are entered. I tried using a 2D character array … |
| | Hi all, im wondering if someone could offer a solution to my current problem which is passing and return information using pointer notation. I have created a small program using the class Person, who has a first and last name and methods to add and retrieve this information which looks … |
| | ok i have a 2d array and i want to trace through it. The Array is RDL DLU i have an entry point of Row1 Col1 which i think is letter R. On this array R means shift right L is shift left U shift up and D shift Down. … |
| | I'm taking my first class in c++ this semester, so i'm a newb. The only other programming experience i have is in python. My teacher gave me this assignment and i don't even know where to start. I don't want anyone to post any code, but a few tips on …  |
| | Hey guys, I am trying to write a program that will use command line arguments to detect user inputed keywords in a text file and output how many times the keyword/s appear. The command line should read like this... programname -f inputfile keyword1 keyword2...keywordN The problem I have is I … |
| | I'm using the header file below. I'm a little confused about how to store any matrices I create... If I do: [code=php] int main() { Matrix A(2, 3); Matrix B(3); return 0; } Matrix::Matrix(int mdim_, int ndim_) { data_.resize (mdim_*ndim_); for (int i = 0; i < mdim_*ndim_; i++) { …  |
| | ok so my code will output the message its suppose to if it doesnt receive any arguments and im 100% sure the problem is the if statement with the argv[1] because i always have problems with char type for some reason. :( [code] #include <iostream> #include <string> #include <sstream> #include … |
| | [CODE]# include <iostream> using namespace std; void init(int *Ptr, const int &s); void display(int *Ptr, const int &s); void sort(int *aPtr, int s); void swap(int *v1Ptr, int *v2Ptr); int index_of_next_smallest(int *aPtr, int *SiPtr, int s); int main() { int size, count; int *nPtr; cout << "Enter the size: "; cin … |
| | what is the counterpart of [CODE]start program.exe[/CODE] in c++?  |
| | Hello, I am not able to compile it on windows. It compiles fine in linux but not on windows. Well actually it compiles if i change a few things but there are many linker errors. Could someonline please tell me where the problem is at. Thanks [CODE]// Project: B*-trees floorplanning … |
| | Hi, My problem here is that, I want to add up the total of the few different items that are entered. I have no idea how to add them up, please offer some suggestions, thanks [CODE]#include<iostream> #include <windows.h> using namespace std; float weightcount(float w); float distancecount(float d); int main(void) { … |
| | I've been coding a little program which works perfectly, but I decided to upgrade it and add a few checkboxes. Now since i've never made one before I'm having trouble and I can't seem to find anywhere that can solve my problem. [code] void TheAppDlg::OnFirstcheckbox() { if(OnFirstcheckbox !=0) { m_cCharSet.SetWindowText(_T("123")); … |
| | [CODE]#include <iostream> using namespace std; class sMatrix { public: sMatrix(int,int); sMatrix (sMatrix&); int getR(); int getC(); bool rValid(double); bool cValid(double); void setEl(double,double,double); double getEl(int i,int j); int getVal(); void print(); void add(sMatrix&); private: int nr, nc; //number of row and cols int nent; //number of entries int nmax; //the max …  |
| | Hi I am using Rougewave library for one of my program. I am using the RWHashTable from it. during the startup of my program, I will load this hashtable with information read from database. so, I have the hashtable filled with data. and during runtime, I need to print all … |
| | Hi, This is the code segment: [CODE]template<class type> void merge_sort(type inputs[], int p, int r, int (*comp)(type, type)); typedef struct { vertex vertices[MAX_VERTEX]; int number_vertices; int adj_matrix[MAX_VERTEX][MAX_VERTEX]; } graph; int compare_vertex(vertex v1, vertex v2) { if (v1.f < v2.f) { return -1; } else if (v1.f > v2.f) { return … |
| | Hi all, I am trying to write a small game with a tiled gameplay area. I have a vector of Tile objects - vector<Tile> area_tiles; - and I'm trying to add Tile objects to this vector like so: [code] Tile t(); // initialize new tile object area_tiles.push_back(t); // and add … |
| | MSG msg ; HWND hwnd; WNDCLASS wc; to me this syntax looks like msg hwnd and wc(all lower case) are variables is this right? and with the exception of wc would changing the other 2 change anything? |
| | Can someone help me with the code to display the second largest value in a set of numbers using '[B][U]while loop[/U][/B]'??? I have done programs using [B][U]while loop[/U][/B] to display the largest value, as well as the largest and smallest value.But this seems a bit tough for me. |
| | I have the following code: my add function and M.add(N) statement keeps turning up errors I'm not sure how to fix it. I also need a getVal function but I'm not sure what to do with it. [CODE]#include <iostream> using namespace std; class sMatrix { public: sMatrix(int,int); int getR(); int … |
| | Here's what I'm trying to do: I want my program to spawn a Msgbox on the first day of every month with some information for the user. Please walk me throught it EXACTLY, as I'm a beginner :icon_mrgreen: |
| | e.g. [CODE] class B { public: virtual ~B() {printf("Base class Destructor");} }; class D { public: ~D() {printf("Derived class Destructor");} }; [/CODE] Is it somehow possible to altogether avoid printing 'Base class Destructor' when an object of class D is destructed (of course without causing a memory leak).. If you … |
| | Now, I am sure there are more than 3 problems with this thing, and it's been sort of butchered into pieces with me attempting to solve this issue. Regardless, outside of the three problems I'd appreciate any input. My book tasks me with creating a program for a zoo that … |
| | i have my file input like this ifstream inFile; inFile.open(fileName.c_str()); and i cin >> fileName; i want the output file name to be the input filename with .dat added to it eg if fileName was c:/tmp/test.txt i want the output to be c:/tmp/test.txt.dat anyone know how i can do this … |
 | Is there another reason besides having a clean, easy to read source file then to use overloaded functions? Thanks |
| | i have a c++ project..i am having project titled "3d animated car".i need u to help me in writing the documentation section of project....i m also sending the program source code..... [code] #include<graphics.h> #include<conio.h> #include<dos.h> #include<stdlib.h> #include<process.h> void main() { int gd=DETECT,gm; initgraph(&gd,&gm,"c:\\tc\\bgi"); int c=12; setbkcolor(0); //setlinestyle(0,1,2); int t; while(1) … |
| | [code] #include <iostream> using namespace std; int main() { double var1 = 0; var1 = 2/10; cin.ignore(); cin.get(); return 0; } [/code] Its not setting var1 to .2 it is keeping it at 0. wth? it does 10/2 = 5, but then it does 2/10 = 0. |
| | [code] #include"stdio.h" #include"conio.h" #include"process.h" #include"ctype.h" #include"string.h" #include"io.h" #include"fcntl.h" #define length 1 struct StudentInfo { char studentid[8]; char lastname[15]; char firstname[15]; char middlename[15]; char gender[6]; char birthdate[15]; char age[3]; char contactno[15]; char guardian[30]; char address[120]; }; struct tmp { char studentid[8]; char lastname[15]; char firstname[15]; char middlename[15]; char gender[6]; char birthdate[15]; …  |
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