51,593 Topics
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| | Hi, I am having a problem with an assignment for a C++ course. I have to make a Game of Life simulator (predator and prey). There are two organisms, lion and ant, and the lions eat the ants. My problem is that for some reason I can't fathom, the lions … |
 | Is it possible to do any logic with gl lists, I am trying to make a wrapper class for them and I have this code in the compile function: [CODE] glNewList(model1,GL_COMPILE); glBegin(GL_TRIANGLES); int pos=0; for (int i=0; i<numcmds; i++) { if (cmdtype[i]=='v') { glVertex(cmdarg[pos++],cmdarg[pos++],cmdarg[pos++]); } else if (cmdtype[i]=='t') { glTexture(cmdarg[pos++],cmdarg[pos++]); … |
| | hello! I need a program that validates the imput of dates. (Checks for leap years etc.) The user enters: mm/dd/yyyy The problem is, I have trouble with complex programs. I came up with this program, but i know it's too basic for what she wants. I need to have arrays …  |
| | Dear All, Please everybody help me!!! I wan to convert mp4 licence of skyview format to other format such as avi wmv... Could you make a sample program for me? please download link below: [CODE]http://www.fediz.com/Mpeg4player.zip[/CODE] 1. 1.mp4 (MP4 licence of skyview) 2. 2.mp4 (MP4 licence of skyview) 3. Codec_ENG.exe (it's …  |
| | OK so I'm trying to parse simple URL's from a whole char chunk using strtok but always keeps giving me an unhandled exception error . SO here is all the code in C++ : [CODE] char* str = "(%/\%)google.com(%/\%)hotmail.com(%/\%)nananna.org(%/\%)" char *url[]; while(str != NULL){ url[0] = strtok(str, "(%/\%)"); if (DownloadFile_1(url[0],szPath) …  |
| | [CODE]int i, j; for(i=2;i<1000;i++){ for(j=2;i/j;j++){ if(!(i%j)) break; if(j>(i/j)) cout<<i<<" is prime\n"; } }[/CODE] Can somebody experienced clear me how this program actually finds prime numbers... The line with the last if condition confuses me most -> j > (i/j) |
| | It is possible read/use data from DDE serve. This function is possible in Micrsoft Excel. |
| | [CODE]// // CoordMatrix.h define the matrix stored in a coordinate format // #ifndef COORDMATRIX_H #define COORDMATRIX_H #include<vector> #include <assert.h> using namespace std; class CoordMatrix { private: // val strore the values in matrix; vector<double> val; // row is row index of value; vector<int> row; // col is colume index of … |
| | int const & refToConst = i; // OK int & const constRef = i; // Error the "const" is redundant what is the difference between the two ..?  |
| | Hi, How to implement the operator << for C++?? I need to use it like that: cout<<(*iter) iter is an iterator is pointing to a vector of some type I've defined. Thank you!!  |
| | I've been scratching my head for quite some time with the following compilation error and I was hoping somebody could shed some light... I have the following in my header (.h) file: [CODE] //the mem_data class======================================// class mem_data : public reader, public date { //multiple inheritance public: mem_data(int,int,std::string); ~mem_data(); private: …  |
| | How to detect which wifi modem is currently connected through code? Specifically using PSDK. Like I am using currently a TP-LINK one TL-WN321G and also a EnGenius one EUB-3701 and also a Cisco one WUSB54GC ver. 3? Is there any way direct name of the wifi modem being used can … |
| | I am currently working on a program where there is a requuirement that if the user removes a wifi modem & puts in another one, then the internet should get connected by detecting the new modem. Also the WPA key should be needed to be entered everytime. I am thinking … |
| | I have a problem with this simple Win32 application I am trying to make. As you can tell by the title, the function CreateWindow() always returns 0, which indicates failure. Here is my code. [CODE] int MessageLoop() { MSG msg; ZeroMemory(&msg, sizeof(MSG)); while (GetMessage(&msg, 0, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); … |
| | Hey there, I was wondering if anyone had the time to look over my code and give me some tips or tweaks to help me get it running. The program is all about inheritance, where i have the derived class using the base class clockType (with using strings) to add … |
| | Hello, I cannot read a file, config.cfg, in the current directory on MacOS X 10.6. I'm running a console app. Can anybody tell me what I'm doing wrong? (By the way the getline() function returns no string.) [CODE] #include <iostream> #include <fstream> #include <string> using namespace std; int main(int argc, … |
| | I am trying to write code which will display the volume of three boxes. I have my code but am having problems getting it to compile. Any help would be greatly appreciated. Here is my code: [CODE] //Assignment Programming Using Structures and Classes // Creating and using boxes #include <iostream> … |
| | Hello guys :) What a great and usefull forum m8s :) I have made a program in snake, but i have remade it, because c++ is quite new for me, but on tursday i have to do a presentation(examination) for my teacher explaining the code, i understand 80-90 % of … |
| | #include <iostream> using namespace std; int main() { int BSR; int HighBSR=0 , LowBSR=0 , NormalBSR=0; int patients=0,sum =0; int count=0; cin>>patients; while(patients != -1)}{{ {if ( BSR ==120 )//HighBSR+=patients; } { else if ( BSR>70 && BSR<120 )//NormalBSR+=patients; else ( BSR<=70 )//LowBSR+=patients;} ; count++; cin>>patients;}} cout<<"The Number Of All … |
| | I have just finished my tic tac toe game but wanted to make it look nicer so i added some colors at the winning scene... [CODE] cout << "congratulations player 1!" << endl; cout << "[W][I][N]" << endl; cout << "[W][I][N]" << endl; // checking if the game has been … |
| | Im trying to do a exercise in one of my books and it wants me to use a function to get the factorial of a number entered by the user. Ive tried several different ways and they either get me numbers that make no sense or say if I entered … |
| | Sooo... Every DLL injection result I've read so far only uses a pre-made DLL, loads it into another process and says "darn I'm good." They do absolutely NOTHING useful and a couple of them are rip-offs of one another only using a different programming language. Google has failed me! Once … |
| | I just finished with my first year of Computer Science in college and over the break I wanted to learn how to do output from a computer using a C++ program to control different I/O hardware. I was thinking I would start somewhere simple with something such as turning on …  |
| | Hai I am drawing 3*3 rectangle by using Rectangle(),bt now if i click on that rectangle i wanna display the image in that rectangle,which is selected from the list control. I know that i wanna handle OnLButtonDown() message, bt my problem is i couldnt differentiate the rectangle which i drawn … |
| | Hi I am trying to make arrays inside a structure.. the structure looks like, [code=c++] struct mystruct{ int val; int num; string state[]; mystruct *next[]; }; [/code] The next pointer array works fine but state array gives segmentation fault. I have an array of this structure . mystruct Graph []; |
| | I have a problem passing an array containing pointers. Here's the function.. [code=c++] void jointtree(Parent *clique[], int nodes); [/code] I am calling it the following way.. [code=c++] jointtree(clique, nodes); [/code] where clique is. [code=c++] Parent *clique[nodes]; [/code] |
 | This is my final project for my C++ class online. I was instructed to make a test and to pull answers from withing a .txt file and compare them to the answer that the user inputs. I'm sure there's a much easier wau of doing things than the way I'm … |
| | I am trying to write a program in c++. I have a file that contains thousands of numeric entries sorted into four columns. The structure of the data looks something like the following: 3 0.2 0.5 6.2 4 0.1 0.6 6.2 //Track 1 2 0.8 0.5 0.6 2 0.6 0.5 … |
| | Hi all, I'm trying to build a program in visual studio 2008, when I build in debug mode, it runs just fine, but if I try to build in release mode, there are no errors but when the program runs I get this error: The program can't start because MSVCR90D.dll … |
| | im trying to convert double to string with this code: if its a number like 3.7345 than its working - but if its 5.0 (only zeros after the point) [CODE] double number=5.0; string ToString; stringstream out; out << number; ToString = out.str(); return ToString;[/CODE] it returns - 5 and i … |
| | I'm trying to read integers in a .txt file into a 2 dimensional array (map). Here is the function: [CODE] void loadmap(int mapnum) { int x; ifstream inFile; inFile.open("level1.txt"); if (!inFile) { cout << "Unable to open file"; //exit(1); // terminate with error } for(int countline = 0; countline <= … |
| | Hi. Can you explain to me on how to "inherit" (if that's the right word) stuff from a header file, and on how to write one? (A header file) Like if i wrote this; [CODE] class Foo { int a = 123; } [/CODE] in a header, how would i … |
| | I just found a question whose statement is as follows: [COLOR="Green"]Write a function contains(const char*, char) which returns the pointer to the first (left-most) occurrence of the 2nd parameter char in the 1st parameter cstring, or NULL if the cstring doesn't contain the char. [/COLOR] Another condition is that inside … |
| | I have several vectors of int elements. Now I want to create a vector of vectors, but I don't want to copy the vectors to the new one. If possible, I'd like to pass them by reference. Please consider: [code=c++] #include <iostream> #include <vector> using namespace std; int main () …  |
| | Good day, i'm creating a calculator in c++ using visual c++. I got error's as below [CODE]c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(19) : error C2144: syntax error : '__w64 unsigned int' should be preceded by ';' c:\program files\microsoft visual studio 9.0\vc\include\codeanalysis\sourceannotations.h(19) : error C4430: missing type specifier - int assumed. Note: … |
| | im curious as to if anyone knows the internals of how cout works? for example the step by step internals of what happens when executing the following statement in c++ cout << "hello world" << endl; -thx |
| | help me please :sad: if you can find out what's wrong w/ my program, please do tell. thanx very much! #include <iostream> using namespace std; void get_start(int start_hour, int start_min) //Precondition: User is ready to enter the values for the hour and the minute. //Postcondition: Values in hours (24-hour notation) … |
| | elow I'm trying to create a program that will display the output : [code] * ** *** **** [/code] please help me [code=c] int main() { for(int i=0;i<=7;i++) {for(int j=0;j<=i;j++) cout<<'*'; for(nt k=0;k<=i;k++) cout<<' '; [/code] then what next its only give the output [code] * ** [/code] please help … |
| | /** readGradeFile ******************************************************* * Read the data from inf into the parallel arrays given. * @params inf -- input file to read data from @pre inf is already open * id[] -- container for student id #s * asgts[] -- container for assignment grades * mt[] -- container for mid-term … |
| | hi, i would like to ask you to help me 'cause i am pretty new in programming and idk what's wrong with that :/ i am still getting an error that " 'main' must return 'int' "...thanks [CODE]#include<iostream> #include<string> using namespace std; class GradeBook { public: void displayMessage(string courseName){ cout<<"Welcome … |
| | Hello I'm getting these 2 LNK errors and haven't been able to figure out how to resolve them, any help is greatly appreciated! Its was an empty Win32 Application that i created and added code into from existing source. [CODE]Error 1 error LNK2019: unresolved external symbol __imp__timeGetTime@0 referenced in function … |
| | I am a beginner with win32 programs, and am trying to integrate my console into a window. My console program starts a new thread which creates a window. [CODE]DWORD dwThreadID = 0; HANDLE hThread = CreateThread(NULL,0,ThreadProc,argv[0],0,&dwThreadID);[/CODE] i want to create a miniature output textbox within my window, which reads the … |
| | I have to pass a pointer to a callback function. When the callback function is not a member function in my class, the argument &callback works. When I make the callback function a member function, I get a compiler error: "error c2276 '&' : illegal operation on bound member function … |
| | This is what I have, How would I declare the array based on what I already have? [CODE]#include <iostream> #include <fstream> #include "tempFns.h" using namespace std; int main (void) { // DO: declare an array of type double called temperatures // Use the constant MaxDays for the number of rows … |
| | Hi, this is my first post. I'll try to keep it short. Basically, I'm trying to solve a one-way wave equation using finite differences. I'm trying to put the values in an multidim. array, where a column represents a time step. The first column is the initial condition. I calculate … |
| | I am working on the menu of a 3D symbian3 game.I am trying to load a png image of size 91 by12 using GFloat(opengl function) vertices_of_image[ ].....but the text in the image is coming out to be wrapped around. i.e.if my text contains ROCKS...then a portion of the alphabet S … |
 | [CODE] int x,y; while(cin>>x>>y) { if(x>y)cout<<x<<"\n"; else if(y>x)cout<<y<<"\n"; } [/CODE] This seems clear,but when I entered this: [CODE]2 4 6[/CODE] and hit enter, I get this: [CODE]4[/CODE] after which I am being asked to enter something again. I put 8, and it prints 8. But what is exactly happening here? … |
| | I'm looking for a method of packing all the files of my applications into one archive, and the ability to extract & load them into memory at runtime with C++. I've tried googling it, but I'm not sure if I'm searching with the right criteria because I'm not finding much. … |
| | I have this structure: [CODE] typedef struct nodo{ int dato; struct nodo *izq; struct nodo *der; }nodo; typedef struct nodo *avl; [/CODE] I have this method: [CODE] void insertar(avl *r, int dato){ if (*r==NULL){ *r=(nodo*)malloc(sizeof(nodo)); (*r)->dato=dato; (*r)->izq=NULL; (*r)->der=NULL; [/CODE] All this code works perfectly. My question is about the line: … |
| | Im trying to have this program continue to run when you enter y or Y at the end or quit when you enter n or N. Everything I try either has it just end or continue to repeat. Any help would be great, thanks! [CODE] #include <iostream> #include <cmath> #include … |
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