51,593 Topics
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| | To All Daniweb users, I have just started the programming trail of learning, i recently got courses from E learning center on how to use C++. The first Code (the hello world project) is where I'm having a problem. On Visual Basic 2010 Beta2 which is the only one that …  |
| | so i was supose to create a software for my class that converts the 24 hour notation to 12, but now i got really lost with it i used the A symbol to display am and the P symbol to display pm heres what i have so far but i … |
| | Hi All, I recently made the move from Windows to Mandriva Linux 2010, in Windows I used an IDE to write my code then build my projects, in Linux I cant find a suitable IDE im really struggling to build my projects. Now I can write my projects in kwrite … |
| | Hi, this is the final step of my program, so far I've set a button to change the default save location and now the last step is to be able to click on the serialized file and have it open in my form. The problem is I don't know how … |
| | I am attempting to write a program that interfaces with Command prompt (simple, bring up a tasklist, user enters the program they want to get rid of, and then the computer does the rest), I already have been able to interface and bring up a tasklist, the code compiles with … |
| | this function needs to ask for a persons name, phone number, and email. BUT it only needs to do this once at a time because it returns to a menu and asks if they want to add more people. I need a way to increment count by 1 each time …  |
| | Hey everyone, I'm having this problem with the aforementioned API. Here is the code to initialize the common controls i want to use..(commctrl.h is already included in my program) [CODE] INITCOMMONCONTROLSEX icex; icex.dwSize=sizeof(INITCOMMONCONTROLSEX); icex.dwICC=ICC_BAR_CLASSES; InitCommonControlsEx(&icex); [/CODE] However, when I try to build , it gives me this error: [I] 1>tkud.obj … |
 | I have learnt: Hello World, Input, Operators, Square of a number, Making decisions and Repeated question. I don't know what would be best; either to revise on that, or move onto something else. I would like to know what would be the best idea for me next. Thanks, Zobadof |
| | Sorry in advance! I did solved thread before I checked if the code somebody said worked. It turned out they didn't help much. The problem is MattyRobot gave me code to open a new window. Now it opens with CMD to; I only wanted the window. I will give you … |
| | i'm writing a program that creates a file called 'hardware.dat' and i'm supposed to be able to insert a record, update, and delete a record. first i'm having problem with the insertrecord cause it keeps giving me an infinte loop. i'm creating file that would hold these data: record # …  |
| | [CODE]void GetData(fstream& In, string& Name, double& Acres, int& Jars); /*Pre: The stream in is open for input. Post: Returns the name of less than or equal 29 characters, acres and number of jars. */[/CODE] I am using this function to pull names from an infile. The first line of the … |
| | When I run the program it only prints out the numbers entered into the array but it will not print out the name of the array. Can anyone assist me on why it is not working? Example: The amount each salsa sold are: 4 The amount each salsa sold are: … |
| | This Program is supposed to get a filename, title and description of a database and then store it to and appropriate filename. [CODE] #include <fstream> #include <iostream> #include <cstdlib> #include <string.h> #include<ctime> #define MAX_FILENAME 256 #define MAX_INIT_NAME 1024 #define MAX_DESC 1024 using namespace std; class date { public: int DAY; … |
| | I am having problems with my white pegs for my mastermind game. The white pegs mean that the user guessed the right color but it is not in the right spot. The problem is that it prints out the white too many times for 1 guess. The problem is in … |
| | It is possible to restrict template parameter? [CODE]template <class T> class myclass { ... };[/CODE] For example I want that T might be int double or my own defined complex but nothing else! |
| | Hi .. i am new in programing and i need to solve this problem ..so far i have done few things but there are some thing missing which i can understand ....so plz help.. The program is to be used to calculate the loading on a beam by a single … |
| | hello all I'm trying to do a concatenation function I do not want to you use the strings property where we can add strings, I need to add two strings and save them in one string without the use of addition "+" i have three variables title , first_name, last_name … |
| | I have a very simple code and I don't understad it's result. I think, this have to print "OK" but does not! [CODE] #include<iostream> #include<math.h> class real { double value; double error; public: real(double,double); friend bool operator==(const real&,const double); }; real::real(double val, double err) : value(val), error(fabs(err)) {} bool operator==(const … |
 | [CODE]#include <stdio.h> #include <fcntl.h> #include <iostream> using namespace std; int main() { int fd, i, oflag; char buf[100]; oflag = (O_RDONLY); fd = open("from4to5", oflag, 0x1c0); if (fd < 0 ) {printf("Error opening\n"); exit(1);} while ( (i = read(fd, buf, 16)) != 0 ) { cout << "child: # bytes … |
| | Can anyone show me how I should split my code for makefile???? and how makefile would look like?? I must say that I have NO IDEA how to do that Actually I think that I don't understand how makefile works I'll be gratefull for help!!!!!! MY CODE: [CODE] #include <iostream> … |
| | [CODE]#include<iostream> #include<math.h> class real { double value; double error; public: real(const double,const double); double get_value(); double get_error(); friend bool operator<=(const real&,const double); }; real::real(const double val, const double err) : value(val), error(fabs(err)) {} double real::get_value() { return value; } double real::get_error() { return error; } bool operator<=(const real& x1, const …  |
 | what would be a good way to load images to use for texture mapping in opengl? I have looked at tutorials such as nehe lesson 6 and some other resources but they all use something old and depreciated that I cant compile.  |
| | Hi, I wrote a program where I get a debug assertion failure. I've made it so that if I press ignore, execution continues correctly. The only thing is I don't want to keep pressing ignore, is there a way to make it ignore automatically? Without the message box appearing? I … |
| | Hi all, just to be sure. I have a C++ DLL in which I am implementing a bit of low-level functionality. To this library I wish to pass a managed System.String pointer (ref) so that the library can load the string with the new/returned value. The question is, do I … |
| | 1. (PrimeNumbers) 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. a. Write a function that determines whether a number is prime. b. Use this function …  |
| | I have got this class:[CODE]class sample{ private: int number; string adress; public: int get_number(); string get_adress(); sample(); ~sample(); };[/CODE] I allocate dyanmically memory space like this(cause i need an array of pointers to obects):[CODE]sample** samples; samples=new sample*[20]; for(int i=0;i<20;i++){ samples[i]=new sample;}[/CODE] My question is how can i sort this array …  |
| | Hello all, I have my assignment topic and I know what information I would like to include in my assignment. Can anyone tell me how to put my data into top-down format? Here is what I have thus far: I'm trying to design a program that will input ages of … |
| | Hey guys!! can you share some ideas about this program, i tried but its not working. 1. Write a program that inputs a five-digit integer, separates the integer into its individual digits and prints the digits separated from one another by three spaces each. For example, if the user types … |
| | Hey everyone. Some back info : I have been developing in C for about a year now on and off. Recently I grabbed myself a C++ book and am progressing at a steady rate. Up until recently I have been developing small applications and done a lot of ports. Wolfenstein … |
| | hi, I'll be greatful if someone tell me how to declare the preiority queue in c++ and also tell me the syntax that how we can put a node in a preority queue. Regards Zain |
| | MattyRobot as you may know him, gave me the code to make a new window, but it opens up cmd window too. I would like it so the window opens only. If anyone knows the code, I would be more than happy to find out |
| | [CODE=C++] /* I'm stuck! Here is what I consider to be a perfectly running program that uses an array ( TArray ) template to hold arrays of objects. Its just about your classic text book example. Its pretty well stripped down to nothing to illustrate my problem. I simply don't … |
| | Here's the code that increases x value by 0.01 increment and outputs: x, placeholder for initial x+t and how many loop cycles it took to find a solution to the equation in function f1() in intervals for temp (0.5 ; 1.0)U(1.0 ; 1.5). [code] #include <iostream> #include <cstdlib> #include <cmath> … |
| | Is my understanding of a vector list correct. vector<list<int>>. The vector holds a list of data type int? [CODE] class my_ht_chain { public: //constructor which creates a table of a certain size my_ht_chain(int size); //destructor ~my_ht_chain(); //insert a value based on key void insert(int key); //search for a value based … |
| | I have trouble understanding the compilers. The following code does work in UNIX under g++, but under VC++ it would not even compile. Anyone can provide valid reasons why? [B]Code:[/B] [CODE]#include <stdio.h> #include <iostream> #include <string.h> using namespace std; int main() { string tmp_nw_msg, crc_chksum, buffer; cout << "Enter the …  |
| | My program takes numbers from a .txt file then puts it in, so that an array has a "bacteria" in it. The "bacteria" will die if it has 4 or more, or if it has 1 or less. It will live with 2-3 neighbors. If an empty cell has three … |
| | Just got back to my interrupted attempt to pick up C++, and I'm already shipwrecked again. Anyway... I'm trying to build another bitty app from my text, but nothing seems to be coming together properly. The program should ask for an array length, send that to an input-handling function, then … |
| | It is possible to choose template parameter in runtime? when i try to construct an object wich has template parameter |
| | hi!!! im a new member of this organization of the IT's. im a freshmen student ,takig up IMFORMATION TECHNOLOGY and i have a problem regarding how to make a calculator using SWITCH CASE, i've tried to make a program of that using other functions and it made it successfully but … |
| | hello, I'm a computer science student. I'm starting to get into the more challenging aspects of C++. Where can i find a good website for quickly finding syntax. Say i want to solve a simple problem, but i don't know the exact syntax, where can i quickly find code snippets … |
| | Do I need a copy constructor? [CODE] #ifndef MY_MIN_PQ_H #define MY_MIN_PQ_H #include <iostream> #include <vector> using namespace std; class my_min_pq { public: //default constructor my_min_pq(); //destructor ~my_min_pq(); //insert element at end of sequence, and rearrange so minimum data at the front of array void enqueue(int data ,int priority); //removes data … |
| | I have this code for a tic tac toe game, it`s not done yet, and what I have done isn`t working like I want it to. The screan prints and promps player 1 and 2 for inputs one at a time, but my while loop in main is probably wrong, … |
| | I am a beginning c++ student and need to read in a text file as shown below: [code=text] Orvilles's Acres, 114.8 43801 Hoffman's Hills, 77.2 36229 Jiffy Quick Farm, 89.4 24812 Houston Bayou Texas Home Grown Popcorn Inc., 124.7 65687 [/code] The criteria is to read characters to comma then … |
| | hey guyz how r u?? plzz i rly need ur help with this 1.. coz i dnt know how 2 writ it..:( Writ a program estimate how much a young worker will make before retiring age of 65. request the worker’s name, age, and starting salary as input. Assume the … |
| | I have to write a function to populate a 50 element integer array with random numbers: 100 <= # <= 1000. I have everything I need in the code except the "between 100 and 1000." The things I'm trying are not working. Thanks! [CODE] #include <iostream> #include <cstdlib> #include <ctime> … |
| | I'm using Visual Studio 2005. I tried to adapt the existing class for the binary search tree (from my book) to a template and mostly it works, but I'm getting errors related to the insertNode and deleteSubTree functions when I try to build it. The header file: [CODE] // Specification … |
 | Hi and I have just downloaded the Irrlicht gaming engine and although I have had a briefing about it from a friend I can't seem make it do what I want. I got the demo which is nearly what my result will look like but then I tried switching from … |
| | we are supposed to implement using STL vector and base it on priority and have have a data value So every time i enqueue i insert an in item into the end of the vector and if no space i modify. So do i reorder the list to place the … |
| | Hello all, I am trying to write a clustering algorithm where, given location of certain points (I.e, latitude and longitude) I need to choose 50 of these to be cluster centers such that the diameter of each cluster is minimized. To that end, I believe that the program should choose … |
| | it builds correctly and runs correctly but when the program gets to the while statement, it just stops completely, does not even allow blind input of data. I know it is a little messy but here is the code: [code=c++]// buildingwillcost.cpp : Defines the entry point for the console application. …  |
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