19,876 Topics
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 | Hi All, I've just started to learn C from "The C Programming Language" (Kernighan). One of the exercises asks you to write function that folds a line of text into newlines after x number of characters without splitting a word. This is my attempt so far: // fold: folds the … |
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 | Hey i try to work on custom signal but i get an compiling error: QObject::connect: No such signal QLabel::changerSignal() in ..\textbasedrpg\FenPrincipale.cpp:173 But i seem to write exactly same thing in header and .cpp »That an big moment i try to see what i do incorrect but can't find. Same an …  |
| | Hello, the output of this code is 'ef' but if we add up a "newline" print after this print then the output becomes 'efd'. Then why in earlier scenerio the 'd' was not getting printed ? Thanks in advance. #include<stdio.h> int main() { printf("\nab\bcd\ref"); } |
| | Recently while solving one thread I was stuck with following problem. Am getting two different outputs for same code. One was executed on my machine and another one on codepad.com. Anyone with any suggestion why this might be happening ? Codepad.com's Output  My Machine's Output  Thanx. |
| | In my *Java to C#* Conversion Project, at one point I came to use java's `startsWith(string prefix, int toffset)` method. I used a substring to solve it for C#. Java Code Snippet: String str1 = "one over the coocoo's head"; String str2 = "someone"; System.out.println(str1.startsWith(str2, 4)); C# does not have … |
 | Code 1 : for(i=0; i<1000; i++) for(j=0; j<100; j++) x = y; Code 2 : for(i=0; i<100; i++) for(j=0; j<1000; j++) x = y; thanks.  |
| | Hello, This code is from "Test Your C Skills" Book. In the book they have mentioned that this code won't work, and thats true. But I am not able to understand, why its not working. Please explain why it gives error. #include<stdio.h> #define SWAP(a,b,c) c t;t=a;a=b;b=t; int main() { float … |
| | how nested esle if statement execute and which statement execute first . give example  |
| | // stringpattern.cpp : Defines the entry point for the console applic #include<stdio.h> #include<stdlib.h> #include<conio.h> void find_subset(char *set, char *subset,int n, int k, int j); int main() { //FILE *fd; int n,k=0,i; char set[100], subset[100],ch; ch='A'; printf("Enter length of the set:"); scanf("%d",&n); printf("Enter the set:"); for (i = 0; i <n; …  |
| | please some body give me the full C code of water jug problem  |
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 | //Author: Frank R. Mendez //Title: Object Oriented Queue //Description: This is program uses double linked list to store data in the queue its functions are enqueu,dequeue and display queue. //Hope it can help you in you future projects. Good vibes to all programmers! #include <iostream> using namespace std; struct Node … |
| | // stringprint.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include "mpi.h" #include<stdio.h> #include<stdlib.h> int _tmain(int argc, char* argv[]) { MPI_Status status; int numtasks, rank, rc; char ch; rc = MPI_Init(&argc,&argv); if (rc != MPI_SUCCESS) { printf ("Error starting MPI program. Terminating.\n"); MPI_Abort(MPI_COMM_WORLD, rc); } MPI_Comm_size(MPI_COMM_WORLD,&numtasks); … |
 | For fun, I want to write my own image format. I'm going to have to draw pixels to a Window, but I haven't found any nice, simple, light librarys that can do this. I've thought about using OpenGL, but it's kind of messy and over-complicated to write code for and … |
| | 1*2*3*4*5*6=620 i right a program and its output 620 means the facturial of 6 using recursion. i could not uderstand factorial using recursion. please help me .  |
| | Kambo company pays employee Gratuity on retirement that can be computed using the Formula Gratuity=(Salary*Fixed Rate*Number of Years Worked)+One month Salary. Formulate an algorithm that can be used to calculate the gratuity and write a c++ program that can be used for the computation.  |
| | Plz..guys i want to know is there any function that can give ASCII value of character? and do i need to use any header file to use that function |
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 | Hi there, I'm just new to programming and C++ ... I have trouble with my code At first I am using "int" for variables but then I realize that i need a much larger range of numbers and also support for decimal operations so I change all "int" to "float"... … |
| | PLEASE TELL ME A THREE DIMENSIONAL ARRAY WITH EXAMPLE . WRITE COMMENT ALSO |
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 | /* ############ Project Name : TIC TAC TOE ############ CODED BY ############ > Faysal Ishtiaq Rabby ############ ~ Student ID : 120909 ############ Khulna University, Bangladesh. */ #include "stdafx.h" #include<stdlib.h> int main() /* Declaring Variables */ char gamestart; char pos_input[]={'1','2','3','4','5','6','7','8','9'}; int gameloop, option_position,input,flag=0,player_number,rand_int,i; /* Variable Declaration Finished*/ printf("Press \"ENTER\" to … |
| | hey I'm thinking about implementing a simle scan tool , to show the available wireless networks and some information about it . I'm thinking about writing it in C . Is it a good choice?? what libraries do I need to impelement it ?? Thanks in advance |
 | I'm trying to create a loop if the string wordEasy contains more than 5 letters. I am using the 'while' and 'for' but none seem to work. I am hopping if you guys would be kind enough to help me figure out what I'm doing wrong. Here is the 'for' … |
| | Hi everybody, I’m having trouble trying to figure out how to create a loop when the ‘difficulty’ takes a value that is not an integer. I want a player to get the ‘default’ statement presented in the switch . The ‘default’ statement seems to make an appearance but it will … |
| | #include <stdio.h> #include <conio.h> #include <malloc.h> #define MAX1 5 #define MAX2 7 int* arr; int* create (int size){ int *arr,i; arr = (int *)malloc (sizeof(int)* size);/*note here size of (int )*size means size of int size no. of times, size is the no of integers in the array*/ for (i=0;i<size;i++){ … |
 | How do I create a function that accepts by refrence an array of character pointers? I need to be able to overwrite the contents of an array of character pointers, hence I need a pointer to that array. Here is some of my code, but it is throwing errors, so … |
| | Hi I learning c++ through a book but I have found that one of the examples provided by the book is an infinite loop. So I was wonderring if anyoone can help me stop it. I tried using the 'break;' statement in every 'for' body to stop the loop but … |
| | Been stuck on this for bloody ages. Seems like no easy way to do it! Would appricate some help, thanks! #include <stdio.h> #include <stdlib.h> #include <time.h> char (char *s, const int len) { { static const char alphanum[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; "123456789"; for (int i = 0; i < len; ++i) … |
 | The foll code gives o/p as 2310103 28 Now my doubt is why here 10 is printed two times although i m passing t=6 for the d parameter?? #include <stdio.h> #include <string.h> int f(int a, int b, int c,int d,int e) { printf("%d%d%d%d%d \n",a,b,c,d,e); return a+b+c+d+e; } main() { int … |
| | For my **Java to C#** conversion project, I need to use something equivalent to Java's `Calender` class. I have some codes like: Calender cal = Calender.getInstance(); long time = Calendar.getInstance().getTime().getTime(); long time2 = System.currentTimeMillis(); which returns some random values at different times. I have come to know C-sharp's `DateTime` is … |
| | Hello, I got some code from: http://stackoverflow.com/questions/1859201/add-seconds-to-a-date this is the code: #include <time.h> #include <stdio.h> int main() { time_t now = time( NULL); struct tm now_tm = *localtime( &now); struct tm then_tm = now_tm; then_tm.tm_sec += 50; // add 50 seconds to the time mktime( &then_tm); // normalize it printf( … |
| | I have recently started learning to program in c. I have written a very basic program its a currency converter. I would like to know how to put an icon into my program so when its on the desktop it looks nice. I am sure there are more important things … |
| | I was looking for the find and replace algorithm which editor softwares are using. for ex: notepad. when i search something and then when i replace it , how exactly it works. I am aware of rabin-karp and KMP algos. but i am wondering if they are most efficient ? … |
| | Hi folks, I recently started using lcc compiler for C, and am having diffculty in compiling and executing my programs.Each time I make a new file using File --> New --> File, I am not able to compile current file. The previous file which was opened gets compiled and exectued. … |
 | I would like to know how is it possible to pass registers as function arguments in C. Let's say I have something like this: int main() { register a,b; a = b; register c = a; return 0; } I want to extract a = b as a new function. … |
 | //Author: Frank R. Mendez //Title: Insertion Sort //Description: Accepts int elements and stores it in an array list then sort every element in accending order //Date: 7/13/13 5:53 PM #include <iostream> using namespace std; class Sort { public: void insertionSort(int x[],int lenght); void driver(); void display(); int arr[15]; // because … |
| | A friend of mine dazzeled me with by asking to write "Architecture for Client-Server in C". As I am noive in C I didnt got his question. I don't expected a prepared recipe but I want to learn the idea what he actually meant. Please Suggest. Thanx |
| | my algo : 1.Construct a max(min) heap from first element of all array, 2. extract a max(min) value from the heap and write to output 3. get one more element from array which the value extracted step 2 was in. 4. repeat until heap is not empty can anyone tell … |
| | int main() { printf("%u %s",&"hello",&"hello"); return 0; } can you please explain that how "hello" is working here ? i know it is string constant ? so it is acting as a pointer to a char like i do char *s= "daniweb"; so, if it is the case, then why …  |
| | Hi to all. I'm trying to use hidapi.dll,if needed i'll post a sources or link to authors page. Here's what i've have in my dll: #define HID_API_EXPORT __declspec(dllexport) #define HID_API_CALL ... int HID_API_EXPORT HID_API_CALL hid_write(hid_device *device, const unsigned char *data, size_t length); ... and this is the part in c#: … |
| | Hello, I was doing some research on enumerating the different drives on a system, and I found some code on MSDN. Here is the page: http://msdn.microsoft.com/en-us/library/windows/desktop/aa364975%28v=vs.85%29.aspx The source code looks like this: DWORD dwSize = MAX_PATH; char szLogicalDrives[MAX_PATH] = {0}; DWORD dwResult = GetLogicalDriveStrings(dwSize,szLogicalDrives); if (dwResult > 0 && dwResult … |
 | Why Can't we use va_list twice? Can any explain me how it creates memory issue ? |
| | hey guys i just need someone to help me out in parts (c) and (d) of the following question: a- Implement the function f(a,x)=sin(ax)/x. (the prototype is double f1(double a, double x). Note that this function is equal to a for x=0. (6 points) b- Write a code that asks …  |
| | I am currently learnning c++ from a text book. but I have come accross an error when trying to run the program. The error reads like this: fatal error C1010: unexpected end of file while looking for precompiled header. Did you forget to add '#include "StdAfx.h"' to your source code? … |
| | Please Explain me the code A a = b as A; Iam confused with it public class A { public virtual void One(); public void Two(); } public class B : A { public override void One(); public new void Two(); } B b = new B(); A a = … |
| | Alright guys I need some assistance with this. Ok In a few days I will start my project but I need to how to do something, Read Below: I need to find out how to display a Users specific table within My MySQL database for example here is a picture … |
 | I'm sorry. These question probably sound very stupid to you people. But to me they are extremely difficult. Imagine being completely ignorant with computers, and signing up for an intermediate level class (I did not take the beginner class)................ and NEEDING an A to make up for the 2 B's … |
| | An algorithm runs a given input size n.If n is 4096,the run time is 512 ms .If n is 16384 the run time is 2048 ms .what is the complexity of the algorithm in big-o notaion ? a)o(n^1/2) b)o(n) c)o(nlogn) d)o(n^2) o() is big-oh! is it logical ? I have … |
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