19,876 Topics
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| | hi everyone I have a problem with a server - client project i have built. At first I made it work by forking and using shared memory. Then i had to replace those things with threads and the problem is that i don't know how to attach the client to … |
| | Hey guys, so i have this project due on the 13th of Dec. I have been trying to work on it but im at a roadblock pretty early on and im just at a loss as to what to do, so i would appreciate a ton if you guys an …  |
| | Hello Members, The wait() system call is illustrated to be used as follows: [CODE] int status, pid; /*fork a child process*/ /*parent is waiting for the child to terminate*/ pid = wait(*status) [/CODE] What exactly does the pointer to the "status" variable do when "status" has not even been assigned … |
| | Otay, I was brushing up my coding skills by creating a basic, coding 101 list class. At this point it works fine with a generic value, either primitive type or class. If it's a class, all the relational operators need to be overloaded to match the class key. I suddenly … |
| | Hello i want to create a file crawler that lists all files in hard disk using directory functions in C i have been able to list files in one directory only and haven't been able to crawl through other directories and sub-directories this is what i have so far. [CODE] … |
| | hi all, ---put in mind that im doing an ASP.NET website.... i made a DB using VS2010 (installed SQL server 2008 with the VS 2010 installation). the DB is in the App_Data folder. in the default.aspx.cs file i wrote this [CODE] Sqlconnection con = new sqlconnection(); con.connection = "server=.\\SQLEXPRESS;AttachdbFile=|DataDirectory|\\Database.mdf;Database=Database;Trusted=true;" [/CODE] …  |
| | I have a problem at hand. It is to generate a C code - i need to do the following, i will capture an image, then i have to this image into an array using C on which i can do some image processing. How do i go about it? … |
| | I am trying to come up with my own code for strcat. This is what I have so far. I'm getting a segmentation fault and i can't figure out why. The function prototype and call must not change. Any suggestions? [CODE]//Function Protoype char* stringCat(char *pWord, char *pTemp); //Function call in … |
| | hi has anyone know detailed info on the mkdir function plus the open dir and how to use it ? |
| | Hi guys, i have to create a program that would store a persons full name, phone number, address, and postal code into a file named contactlist.dat, so far no problems, but im also supposed to use char for every single one, even the phone number, does anyone know how to … |
| | Hi everyone. I'm using sqlite3 in Linux and I currently have a problem. I have a database and 2 tables in it: db1 and db2. db1 has 3 columns: empID, empName, empAddr. db2 has just 1 column: empID and its value is set to 0 by default. I created a … |
| | Hi, i have a problem with passing the array of structs into another function. Line 15 and 20 - errors. Here the code [CODE] #include<stdio.h> struct point { int x; int y; }pointar[3]; typedef struct point POINT; struct circle { int x; int y; float radius; }circlear[3]; typedef struct point … |
| | Hey guys, I'm a newbie in C and I've got to make an app: Users enter 10 numbers; I've got to compare them; At the end tell the user if a) Number are decreasing (ex: 10 9 8 7 6 5 4 3 2 1 0) b) Number are creasing … |
| | I have written the program below to calculate Standard deviation and mean of a given file of data. If I run it gives the wrong answers. Can someone help me go along? #include <cstdlib> #include <iostream> #include <cmath> #include <fstream> using namespace std; class Statistics{ double x; int n; double … |
 | When I open a file, the file is valid (passes if (!file)). But when I use it with fgets, fgets fails. When I called ferror the return value is 32. I looked that up and it means broken pipe. What does this mean and how could I fix it? This … |
 | [CODE]void InputFunction() { system("cls"); printf("\n"); printf("\t\t ***************************************\n"); printf("\t\t ***************************************\n"); printf("\t\t *** ***\n"); printf("\t\t *** WELCOME TO ***\n"); printf("\t\t *** CLASS ATTENDANCE SYSTEM ***\n"); printf("\t\t *** ***\n"); printf("\t\t ***************************************\n"); printf("\t\t ***************************************\n"); printf("\n\n"); fflush(stdin); printf("\t\t What Is The Course Code? "); scanf("%s", SubCode); fflush(stdin); fflush(stdin); printf("\t\t How Many of The Total Weeks? … |
| | hello friends actually i want to know which compiler is best suitable for gui development using c.please send the web adress to download that and send how to configure that.  |
| | Hello all. I've written a program to solve sudoku puzzles. I had it working for int, see below. [CODE] typedef int element; typedef element game[GAME]; [/CODE] I changed [I]element[/I] into [B]short[/B], and then it exits with a segmentation fault. I then changed [I]element[/I] into [B]char[/B] and I got an immediate … |
| | Hello all, Info: I am using Pelles C compiler. Some code first: Following is the linked list structure I am using. [CODE]typedef struct _NODESTRUCT { void* data; struct _NODESTRUCT* next; } NODESTRUCT, *PNODESTRUCT;[/CODE] Method to add a new node to linked list: [CODE]PNODESTRUCT AppendNode(PNODESTRUCT rootNode, void *data) { PNODESTRUCT tempNode; …  |
| | I want the program to send a signal from Robot1 via Bluetooth to Robot2 Expand Post » hello, I want to write 2 programs with C , one work on Robot1, the other work on Robot2. So I want the program to send a signal from Robot1 via Bluetooth to … |
| | I'm supposed to create a c file that contains functions perform certain tasks with a structured matrix. My h file and current c file are as follows. [code=c] typedef struct { int rows, cols; //matrix dimensions int **elements; //element array } Matrix; void matrixInit (Matrix* m, int r, int c); … |
| | Hello I am new to this community and newbie to c language. I want to code for modulus operator (%) in c.. Need Help. Thanks in Advance |
| | 0 down vote favorite hi, I had a problem with adding reference in my C application. I am unable to add linker reference to "libiconv" in my data compresser project.I have download "libiconv" library but confuse in adding reference which show error in compiling.I'm using Dev C++ for developing my … |
| | I need help writing an anagram that test 2 strings. [COLOR="red"]os[/COLOR]: microsoft [COLOR="red"]compiler[/COLOR]: visual studio Here are some of the directions: Read the first string, then write a loop that uses an array of 26 ints to count how many times each letter has been seen. Read the second string, … |
| | how to crash windows using C Pointers ?? Need Real help |
| | Hi, Im guessing this is an easy piece of code, but i cant find the answer Im looking for anywhere. I have 20 files each with a different a list of numbers (not all the same amount of numbers). Each file is called data-01.txt, data-02.txt... to data-20.txt.I need to open … |
| | Can you please suggest an algorithm that uses pointers and I also have to read and save the text file, which I#m having trouble with. Here is a rough translation of the task into English(I used google translator so it's bit jumbled, my german's not that good): Define a structure … |
| | Hi,everyone! I have to write a program that can find zip codes. I have to read the codes from a txt. file, so i have to use struct arrays In the main program, I just have to enter any random zip code and the program should be able to tell … |
| | I am new to conneting to MYSQL through a C++ code; so this is what i did i installed MySQL Server 5.1 (it was a EXE), and thats it. i opened the MYSql command line client and created a DB, and added a table and values to it. This is …  |
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| | Hiiiiiiiiiiii!!!!!!!!!........... The program written below runs perfectly upto some extent but the output varies............because the compiler prints the "{Enter the value}" line twice and itself adds a positive number in the counter.................. [code=c] #include<stdio.h> #include<conio.h> int main() { int sum1=0,sum2=0,sum3=0; char value,alpha; while(alpha!='D') { printf("\n Enter the value"); scanf("%c",&alpha); if(alpha==0) … |
| | Hi, This is probably, a really novice question, but I have some code that is using the malloc() function to declare an array, the problem is that I am using a special compiler to compile code for hardware which gives me a lot of errors because of the stdlib.h header … |
| | Write a program which initializes two vectors, one of type integer, the other of string. Populate the string type vector with five strings (‘one’, ‘two’, ... ‘five’). Populate the integer vector with [ 5 4 3 2 1 1 2 3 4 5 ]. Write a function that empties the …  |
| | I have a project to have a file read using argc and argv. Then sort it and do some other things. I'm having trouble with the very first step. Loading the file. This is what I have so far. Any help you be great. [CODE] #include <stdio.h> #include <stdbool.h> void …  |
 | I know many will start with ODBC, but slow down ;) I have searched for ODBC and all I find is UnixODBC. Is this the same as ODBC? Also how stable it is? I will be happy to know some apps/companies behind it! I need support for MySQL, PostGreSQL, DB2, … |
| | [CODE]do { ReadFile = fopen("StudentDetails.txt", "r"); if(!ReadFile) { system("cls"); printf("\n"); printf("\t\t ***************************************\n"); printf("\t\t ***************************************\n"); printf("\t\t *** ***\n"); printf("\t\t *** WELCOME TO ***\n"); printf("\t\t *** CLASS ATTENDANCE SYSTEM ***\n"); printf("\t\t *** ***\n"); printf("\t\t ***************************************\n"); printf("\t\t ***************************************\n"); printf("\n\n"); printf("\t\t This File Cannot Be Open Successfully!!\n"); printf("\t\t Please Check It!!\n"); exit(-1); } ++temp_week; … |
| | i want to create simple chat program.send message from client and the server forward this message to all clients who log entry. this is server: [CODE]#include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <errno.h> #include <string.h> #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h> #include <sys/wait.h> #include <signal.h> #include <pthread.h> #include … |
| | Hi i wanted to make a software that can "Off" and "On" a computer fan connected with a usb can i make it in c++?? i have 1 year experience doing C++ Thanks, |
| | Hello, I am new in your forum, and i Hope you are nice specialists ! I have a new machine, and i begin to work with win 7. Some times ago i was using Code Blocks, and every things were OK . But now, it's impossible to run my programs … |
| | Hey guys. I'm learning by myself the C Development... But I've got a serious problem with one my application. The exercice is: Create a board of 10 lines and 3 columns. Scanf this board. Check the 3 highest numbers of each line, add them And just printf the highest sum … |
| | I am having a programming exam ,and we have studied arrays ,files ,and linkedlist ,hash tables ::the question is in what cases is the best choice to use one of these !! because most of the mark goes to how & what kind i used in implementing the program that … |
| | Hi, I am developing some code to run on hardware and I am using the sin() and cos() functions inside the standard math.h many times, which slows the program down dramatically. I was wondering if there is a way to "approximate" the sine and cosine of a value (angle is … |
| | [B]Help me I want to install C language in my computer how can i do it[/B] |
| | please anyone help me to catch this.i tried to return an array from function and access it within main function.i just got a warning [CODE]"function returns address of local variable "[/CODE] and when i execute the program it gives garbage values as array elements..cam you help me pls... [CODE]#include<stdio.h> int … |
| | i keep tried many time and the program could not be scan and no output displayed and some illegal character.... pls help or give some guide .... thanks you.... here is my code [CODE]#include<stdio.h> #include<stdlib.h> #define NO_OF_WEEKS 14 #define NO_OF_STUDS 5 void looping(); void List_Student_Details(); typedef struct { int year; … |
| | I have 2D char array, dynamically allocated (using malloc). I need to add another line to it but I have no idea how to use realloc with 2D arrays. I have this: [CODE]res = (char **) malloc(1 * sizeof (char*)); for (i = 0; i < 1; i++) { res[i] … |
| | I wrote a function in C that receives a pointer to a character array as argument and switch all accented letters with their corresponding character, the code is as follows: [CODE]void removeacc(char *texto){ char a[]="\x83\x84\x85\x86\xa0\xc6",A[]="\x8e\x8f\xb5\xb6\xb7\xc7"; char e[]="\x88\x89\x8a\x82",E[]="\x90\xd2\xd3\xd4"; char i[]="\x8b\x8c\x8d\xa1",I[]="\xd6\xd7\xd8\xde"; char o[]="\x93\x94\x95\xa2\xe4",O[]="\x99\xe0\xe2\xe3\xe5"; char u[]="\x81\x96\x97\xa3",U[]="\x9a\xe9\xea\xeb"; char n[]="\xa4",N[]="\xa5"; char c[]="\x87",C[]="\x80"; char y[]="\x98\xec",Y[]="\xed"; int … |
| | Hi everyone. Is there a way to use w3m in a C program such that when we run the program it will automatically "run" w3m instead of us typing it in the terminal in linux? Thanks |
| | The error i get is: 'user:input' undeclared[first use this function] [CODE]#include <iostream> #include <cmath> using namespace std; int main() { // declaring variables \\ string user_input; // end of declaring variables \\ cout <<"Hello and welcome to Mr. Nightwish's lab of crazy!" <<endl <<endl <<"Please choose one of the following … |
| | Hi guys, Basically Im working on a project using an ARM STM32 processor on a Keil eval board. Attached to it is a UC1601 GLCD screen. The problem that im having I want to be able to increase the size of the font, but im not sure how im to … |
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