19,876 Topics
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| | Hello, i want to make a multiline listbox, that would look like [URL="http://www.daniweb.com/forums/attachment.php?attachmentid=13350&stc=1&d=1264164137"]this[/URL]. I was searching for solution for a week so i think now is the time to ask for help :( As you see this listbox is so special, because it has two lines per row and those … |
| | Is there any problem with the code . Why this code is generating all offsets as 28. [CODE] #include<stdlib.h> #define offsetof( T , M ) (( size_t )(( char *)&(( T *)0) ->r - \ (char *)(T *) 0)) int main(void) { struct STU { char name[20]; struct DATE { … |
| | hi all. from where i can download this header file ncurses.h for windows? thnx in advance  |
| | wn compile a code(400 lines app) after running 3 times through the loop(loop in the sense assume the 200 lines) it says unable to open a file...(which it had opened d previous 3 times and executed wel) so i tried perror() and found "not enough memory" Please suggest me wt … |
| | First off thanks to all the members of daniweb for all there help and support, they've been fantastic. I'm on the last stage of my program and i need a little more help. I am using binary serialization to save information, i don't want to use xml because frankly it … |
 | Hi! Can anyone explain why the output of the code below is [B]6 7 7[/B] ? [CODE]#include <stdio.h> int main () { int a=5; printf ("%d%d%d",a++,a,++a); return 0; }[/CODE]  |
| | Hey guys, I'm working on an SQLite3 wrapper using C programming. I was wondering if you know how can I set database properties such as mode, headers and echo through the C application. For example when running the SQLite shell and you are connected to the database you can do … |
| | Hey how do I make so this would save myfile as a text file? [CODE]FILE * pFile; char filename[256] = "myfile"; pFile = fopen (("%s",filename), "w"); fclose (pFile);[/CODE] This creates a File named myfile but not as a textfile. I tried to add .txt after %s but that doesn't help. …  |
| | Hi everyone...I am building a program to input students names(first and last) and also GPA. I have everything working but the sort by last name. Everything works fine, even the GPA sort but the last name sort will not. Please help. Below is the function in my program i am … |
| | [CODE] #include<ncurses.h> int main() { WINDOW *win ; initscr(); win = newwin(10,30,10,10); box( win, ACS_VLINE, ACS_HLINE); refresh(); wrefresh(win); mvwprintw(win , 13, 14, "Enter any Key :\n "); refresh(); wrefresh(win); getch(); refresh(); wrefresh(win); endwin(); printf("END"); return 0; } [/CODE] I just started learning Ncurses and have some questions: i understand that … |
| | I want to launch a new process from a given string of input (including parameter). I tried to use system() but it appears that in the child process, getppid() is not the same as the caller in some runs (probably because system uses the shell as command interpreter). However, if … |
| | i wrote this shell given below. please i need any suggestions and assistance in making this created shell support the following commands: cp (copy), del (delete), hos (prints the hostname of the machine), cd (changes directory), clr (clears the screen), dir (lists contents in directory), environ(lists the environment setting), echo … |
| | Can anyone provide me certain project topics in c/c++? i wan a sooner reply  |
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| | "How to declare an array of N pointers to functions returning pointers to functions returning pointers to characters? Declare it this way char *(*(*a[N])())(); Even this seems to be correct (char*(*fun_ptr)())(*func[n])();" Is this syntax correct? If so is there any thing more confusing than this? Why do people invent something … |
| | [CODE=c] int main(int argc, char** argv) { char c[999]; char alpha[2[26]={'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','a','b','c','e','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'}; int pos[26]; int i=0; for(i=0;i<26;i++) { printf("%c\n",alpha[0][i]); } } [/CODE] This code is giving me an "error:exit code with return 1" and a lot of warning saying "excess elements in array initializer". I have kept searching the web and …  |
| | Greetings again. I'm encountering an error with the following section of my script. If I include the commented section my program returns the following error; "(Router -Startup) the URL cannot be empty. Parameter name : url" With it commented out like below, the .dll functions correctly. [code] public List<Form> Startup() … |
| | Hi, Where does a static function reside? We know that static variables reside in BSS. So does a static function also reside in any particular place? Again is there any classification of functions like there is for data like heap, stack, BSS. Moreover, is function pointer similar to data pointer? … |
| | hey guys, im working on a little program that would ask the user to input file name and would ask the user again to specify the output file so the contents of file one would be transferred in to the file 2. i have been working on it for few … |
| | Hello, I am trying to do a program that is reading for example a.txt file that have 5 lines and i want him to show me for example line #3 only, i know i need to use fgets but i rly dont know how to start it a.txt [CODE]1;27.01.1957;8;12;31;39;43;45; 2;03.02.1957;5;10;11;22;25;27; … |
| | I have code that outputs data as so [code] Input file name: file.txt Input text: Process id 1, Quantum No 2, Priority 0 Process id 2, Quantum No 3, Priority 1 Process id 3, Quantum No 3, Priority 0 Process id 4, Quantum No 1, Priority 2 Start of processing … |
| | I want to read he source file of the .exe I am writing. For example if I am running test.exe I want to read test.c Also if the name of the file changes it still had to open it. what i have tried is: [code] FILE *fp=fopen(*.c,"r") [/code] Can someone … |
| | Hi , I am in a big trouble , I am student ( electrical engineering ) in freshman year who has a course in c . I need your help in writing my project which is going to be submitted on Saturday 23 Jan and I am not familier with … |
| | Hi. I am trying to input values from a user and put them in a linked list. Some how when I display the values that the user inputs, they are both show up under one variable. ie. user inputs $3 and then inputs $5 for next variable. however, when i … |
| | I am posting this for a suggestion. I want to know which is the optimized way for writing a C code for the below problem. question is to ouptut the below string "Post New Thread " to "Thread New Post" I have 2 methods. 1. Read the each character in …  |
| | I have an array, b[10]; i would like to add up all the values in that array and store the answer as wt. any help? |
| | I have an array full of ints, the program prints out a line depends on the numbr of int e.g. if int is 8 it will print the line 8 times. And do this for all the ints stored in the array. this is my output: Start of processing ---> … |
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| | Hi, I m working in c and unix... Help me out how to become an expert in c programming.... suggest some website link, tutorials and books...for both c and unix.. Thanks, Nshh. |
| | [CODE]//word frequency counter #include <stdio.h> #include <stdlib.h> #include <string.h> #include <ctype.h> struct words { char word[255]; int count; struct words *next; } *pointer, *start, *previous; int statistics(); int main(void) { statistics(); system("pause"); return 0; } int statistics() { FILE *fp; int pom,a; char quest[255]; start=NULL; fp=fopen(name, "r"); fscanf(fp, "%s", &quest); … |
| | hi guy i started learning c recently, and im trying to do exercises from the book the bad thing is they are not showing the solutions. what i need to do is simply modify the program below so that instead of reading single characters at a time, it reads in … |
| | Hi, I am trying to implement a crc check but I am not having the correct output. i.e. I am having a "Corrupted file" when the file is not corrupted, and vice versa. I am not "seeing" my mistake since according to me the logic is right. The wierd thing … |
| | hi all, i have i this question for my project, but i have some problems with sorting the names of students by alphabetical order and order the names by their scores. the names are strings and the scores are of type int. this is the question and i want functions … |
| | I am very new to C++ and have written only basic algorithms. In school we use turbo c++ compiler but now i have to attend a workshop for which I need to be able to use a gnu compiler and I do not know how to change my programs for … |
| | Hello everybody :) I've to solve C++ problem and there it is: [B]You have to write a program in C++ that computes the difference between the maximal and the minimal value of function f(x,y) obtained on an integer point in a given rectangle [a, b] x [c, d]. Your program … |
| | hi and thanks for advance, i have a problem to compare between 2 arrays. i have a file name fruit_file which has a content like this: apple orange mango banana papaya and i have an seed array from arg list which is; mango lime pineapple peach i want to copy … |
| | hey guys im using vi to try and compile code for school in main i keep getting errors in the functions READ and PRINT and they say that the variable in the function call is not within the scope. here is my code: [code] #include <iostream> #include <iomanip> #include <fstream> … |
| | I'm implementing a TCP protocol. TCP implementation requires to send packets continuously and if the receiver doesnt respond after a particular interval of time it should resend the packet again. I need some method to implement a timer expiry function. How can I implement it?? Should i implement threads (If … |
| | Ok i half have a working scheduler. The idea is to print out input from a text file, with the process id quantum and priority, sort them out into priority order, 0-20(0 highest) ad print them out the number of times the quatum is. here is what i have so … |
| | I'm trying to get some user data into an INSERT query using the Mysql C API (don't know if this belongs rather in the Mysql forum, let me know...) I have the following code taking some pointers from the Mysql webpage forum, but to no avail: [CODE] #include <mysql.h> #include … |
| | Please help, and point me in the write direction... okay so I'm basically doing a simple address book. i can create contacts and display them and search for them but... when i return to the main menu and attempt to search again... i cannot open the file... or if i … |
| | [CODE] #include <iostream> #include <cstdlib> #include <ctime> #include <cstring> using namespace std; struct UKStudent { char name [30]; int noTest; float mark [10]; int final; char grade [30]; }; struct OverseasStudent { char country [30]; char name [30]; int noTest; float mark [10]; int final; char grade [30]; }; union … |
| | somebody help me please! Write the following C\C++ program: Program starts two threads (from now onwards A and B). Main program generates number N from range 5000 and 10000. Number N is passed to thread A. Threads A generates N random numbers from the range [1, 100]. Generated numbers are … |
| | In this assignment a scheduler algorithm needs to be designed and implemented. The scheduler designed will be used for scheduling different tasks/process to be executed in a system. There are different kinds of processes in a system. When the process enters the system it will be directly stored in the … |
| | give me the answer in bignners level write a program using c language to save ten numbers in an array and display them in reverse direction |
| | I have written this code and it compiles and works just fine but I would like to put the string day[7]; as private since the days of the week will never change and I am required to have at least one private member in my code. When I simply move … |
| | This simple code is producing weird output. I write a line and press enter, it echo's the line...well, supposed to...Because, sometimes, it is not showing. In code blocks, i can assume that when the program is returning zero the program is terminating correctly. I tried to figure out, when it … |
| | i had a term project and i must do until monday . Can you help me please ? :( 1. Write a C program that plays the game of “guess the number” as follows: Your program chooses the number to be guessed by selecting an integer at random in the …  |
| | I am writing a C program that requires me to use a dynamically allocated struct which is defined as below. [CODE]typedef struct 513 { 514 char* word; 515 int freq; 516 }wordfreq;[/CODE] When I allocate the word field of this struct, I am allocating this dynamically as well (using strdup). …  |
 | Hi, Simple but driving me nuts. I am trying to create a table of pointers to already defined structures. But I can't find correct directions and I'm not used to this so HELP pliz! I managed to do it for functions, for some reason I can't find how to do … |
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