[c] Forum Topics

im curious as to the why there is a signed version of char and unsigned version? what are the purposes??

WHEN I TRY TO OPEN FILE IN APPEND MODE ,IT CREATES THE FILE BUT IT SAYS "IN-VALID ENCODING " ALONG WITH THE FILE-NAME ........I HAVE PASSED THE ARRAY OF STRINGS CORRECTLY IN string moreover the strings in "string" are sorted .....any string in "string" is made up of only 4 …

Greetings to you friends)) Advice please - how to get integer value from the console? I did so, but nothing good can come out - [CODE] short int n = 0; n = (int)getchar();[/CODE] thank you in advance for your reply ))

Hi guys )) Please tell me - how to check that a variable is initialized ? Thanks in advance )

Hi, I want to create a text file with the name as SYSTEM DATE... for example---28/04/2008:9:11:50.txt The File name should be allocated dynamically. Can you provide the c code for this? Plese help me.

Hi All.. I'm writting my own replacements for the memory allocation/deallocation routines malloc() and free().In that file i'm using some variable names.. So after getting the header file, how can i use those previous variable names which i declared in mymalloc programme in any programme. In my main programme i …

Hi y'all, I'm new to C and to this community so kindly bear with me. I need to open a txt file using C(only).The thing is I'm able to open it if it is directly inside a drive partition(D:\), but if it is inside a folder then its not opening. …

Hi, Can anyone tell me how to concatenate two strings in NetBeans using Cygwin and also what is the right header file to be included?

Hi there, I have to make a function valid_dice_selection that helps another function select_dice to check the length of a string and besides that it has to check that the characters in that string only include 'x', 'X' and '-'. Ive gotten so far: Im not sure how to check …

Dear respected programmers. Please could you help me (again) on how to put the following code into functions for my program. I have read on-line and understand how functions work but when I do it myself it all goes pear shaped(I am such a noob). Please could you help with …

Im new to C, this will probably become apparent. I've been working on this program for about two months now and im getting to the final stages of it being completed. I just need to clean a few things up. Anyways, one of the functions my program does is sends …

Hi, It is my very first post, im doing it because i know some C basics and now im stuck with more advanced problems, more catchy questions. Lets say iv allocated a memory block by function called calloc. i have 1 bit field [CODE]struct datatype { unsigned short int a: …

Hello there, I'm new to C programming and am following a course in C. I've got an example code for piping. It's not a very hard code to understand. It goes like this: [CODE] #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <string.h> #define READ_END 0 #define WRITE_END 1 const char …

1.What is diffrence Between NULL and '/0' characters? 2.Does the last cell os a string has NULL or '/0'?

Hi, Could someone tell me how to open a file in C based on user input. This is what I have tried: [code=c] printf("enter the filename"); scanf("%s",filename); fp1=fopen("filename","r"); [/code]

how can I output 123454321, if i input 5. and 1234321 if i input 4?

Hi everyone, I need to write a bunch of x,y coordinates to a txt file one below the other using C(only). I'm able to do so but all the coordinate values occur one next to the other. Here's my code: [code] FILE *file1 = fopen ( "/cygdrive/d/newfile1.txt", "w" ); printf("The …

can anyone help me with the above problem? i need the code in C language. the problem is: Store random numbers into two-dimensional array of 6 * 6 and interchange first 3 rows with last three rows thanks you in advance.

I'm programming with c & C++.Usually i'm programming in Codeblocks IDE.Sometimes i'm using Fedora(Linux) too.Plz can anybody tell me is there any difference between those two programming environments?

Hi everyone! I have a task that needs to be made in C in Linux. I use Kubuntu. This is the task: Process (coordinator) creates 5 working process (pool of processes). The working processes are waiting to be awakened by the coordinator, perform a job and wait again. The coordinator …

Can anyone tell me the Coding for: [ATTACH]18596[/ATTACH] Help me!!!

Hi, I have a problem with fread,i wrote that program and in the input file only "Hello Word". the out put of the program only prints "Hell" and when I increase the elements in fread to 2 it outputs "Hello Wo". so for each element in fread it reads 4 …

Hi ! I have a C source code of Knight' Tour like [CODE] #include <stdio.h> #include <winbgim.h> #include <stdlib.h> #include <conio.h> #define N 8 void alternatif_bul(int,int); void alt_say_hesapla(); int yeni_konum_bul(); void alt_dizi_sifirla(); int board[N][N]={0}; //satranç tahtası int alt_x[8]={0}; //gidilebilecek alternatif karelerin X konumlarini tutuyor int alt_y[8]={0}; //gidilebilecek alternatif karelerin Y …

I need to write a code that receive from the user numbers (must use with EOF) and store them into a matrix. There are some more requirements: 1. Matrix must be only N*N size, while N will be defined at top. 2. If user is trying to enter more than …

Hey guys using Linux(C) using POSIX API system calls read,write, open etc. I can open,read,write to a file and copy its contents to an output file. How would I go about copying more than one file to an output file using related system calls only. I currently have: [code=c]filein = …

Hi, I'm having a problem with my C code. I have a program that fork()'s a child process. The child process waits a time period defined by command line parameter, then alarms the parent process. Now, the program has to handle SIGUSR1 and SIGUSR2 signals too. The first one should …

hi, i would like to evaluate some value in C. ex [code] #define OK 1 int main() { char *ptr; ptr=(char *)fun(); if(*ptr) printf("SUCCESS"); } [/code] here fun() returns char * and stored in ptr. i would like to check weather ptr is OK or not, i do't like to …

Hey, I've been trying to search for a nice, easy-to-read material about signals in C. So far I haven't found anything that could get through my gray brain mass. My university's material gives only a small surface scratch to the topic, and internetz hasn't been able to tell me much …

Hello, If I have a text file with the format: Name = MattPhilip Age = 22 how can I use C to read from the file and fill in a structure? Thanks

hey guys i'm trying to write a code using stacks in C the code should recognize the parenthesis if it closed or opened or not I've done the greater part of the code, but I'm so confused .. I have to submit it after 4 hours .. please I need …

hello friends an anyone help me whether one can create a tic-tac-toe game in C

Hi,I am trying to scan a string to char *name inside struct data but it gives me segmentation fault. please help thanks. [ICODE]#include <stdio.h> #include <stdlib.h> #include <math.h> #include <ctype.h> #include <string.h> struct data { char *name; }; typedef struct data data; int main(void) { data first; data *fp; fp=&first; …

Well, after searching through some old posts here, I found that there were different ways to go about playing general sound effects in C. Can anyone help me figure out how to play sounds in my programs? I'm making them in C ( hence this sub form) and I'm on …

ok, im clueless.. i need to create a storebot (for buying and selling items) on a game i play called Eternal-Lands.. i dont have a clue where to start.. any help will be much appreciated

It's my First Program using circuar singly linklist [CODE] typedef struct clist { int data; struct clist *next; }CLIST; CLIST *cp = NULL; [/CODE] Add new node function [CODE] void add(int num) { CLIST *r; r = malloc (sizeof (CLIST)); if (!r) { printf("\n\n Not Enough Memory"); return; } r->data …

I wanna ask, How can we reverse a number by using Recursive ? For example if a number is 123, the result will be 321. is that any idea to help me? because i can't think about it... i poor on this chapter.

Could we find the largest among three numbers using 'for' and if? I have the following program, please check it #include<stdio.h> main() { int a,b,c,sum=o,i'; printf("enter the numbers"); scanf("%d%d%d",&a,&b,&c); sum=a+b+c; for(i=sum;i<=sum,i--) { if(i==a||i==b||i==c) printf("%d the greatest"); exit(); }}........please clarify the logic if it is correct to the intention..

trying to do a program that sums all the even numbers in the sequence but i think im doing it wrong heres my code [CODE]#include <stdio.h> int fib ( int n ); int main ( int argc, char *argv[ ] ) { int i , sum = 0 ; for(i …

The following lines of code output "FFFFFFFF" #include <stdio.h> int main(void) { int i; i=-1; printf("\n%X\n",i); return 0; } This is the 32-bit representation of -1 in Hex. I'm trying to get it to output fewer bits: e.g. 24-bit: FFFFFF In fact, the output I want needs to be 6 …

I'm very interested in learning C before C++ but I can't find good books The K&R book looked very organized and short but it seems it is very outdated. So my two questions are.. Should I read the K&R book even thought it uses an old standard, if I do …

I have the following code for converting a list of t infix expressions into their postfix form:- [CODE] #include<stdio.h> #include<string.h> #include<ctype.h> #define MAX 400 struct stack { char arr[MAX]; int top; }; void initstack(struct stack *); void push(struct stack *,char); char pop(struct stack *); void convert(struct stack *s,char *); int …

I have a question about embedding Perl scripts in C. I wrote most of the program in C and a portion of it in Perl. As of right now, to call the Perl script I'm using pipe(), fork() and dup2() to create another process and have the Perl application write …

#include "Stdio.h" [CODE]main() { int a,b,c; int count = 1; for (b=c=10;a="- FIGURE?, UMKC,XYZHello Folks,\ TFy!QJu ROo TNn(ROo)SLq SLq ULo+\ UHs UJq TNn*RPn/QPbEWS_JSWQAIJO^\ NBELPeHBFHT}TnALVlBLOFAkHFOuFETp\ HCStHAUFAgcEAelclcn^r^r\\tZvYxXy\ T|S~Pn SPm SOn TNn ULo0ULo#ULo-W\ Hq!WFs XDt!" [b+++21]; ) for(; a-- > 64 ; ) putchar ( ++c=='Z' ? c = c/ 9:33^b&1); return 0; …

I have the following code for Quick Sort procedure: [CODE] #include<stdio.h> void Quick_sort(int *arr,int left,int right); int Partition(int *arr,int left,int right,int pivotindex); int main() { int a[20],n,ctr=0,j=0; printf("\nEnter number of elements:"); scanf("%d",&n); printf("Enter array elements:"); while(ctr<n) { scanf("%d ",&a[ctr]); ctr++; } Quick_sort(a,0,n-1); printf("\nSorted Array:"); while(j<n) { printf("%d ",a[j]); j++; } …

Hello all. Can anyone here help me create a separate function for the socket() API in socket programming? I successfully created one in Linux before but so far I can't do the same in Windows. The Windows version can't successfully connect using the separate socket() function. My primary suspect is …

Consider the error in following program- [CODE] #include<stdio.h> #include<conio.h> #define MAX 100 struct stacktype { int stack[MAX]; int top; } ; void push(struct stacktype * s,int item) { if(s->top==MAX-1) { printf("Overflow"); return; } s->top++; s->stack[s->top]=item; } int pop(struct stacktype *s) { int item; if(s->top==-1) { printf("UnderFlow"); return -1; } item=s->stack[s->top]; …

Hi string copy not working with following code VidZone[Loop].pui8Source = (UINT8 **)malloc(FileCount * sizeof(UINT8 *)); for(FileIndex = 0 ; FileIndex < VidZone[Loop].ui32NoOfSourceFiles ; FileIndex++) { VidZone[Loop].pui8Source[FileIndex] = (UINT8 *)malloc(255 * sizeof(UINT8)); strncpy(VidZone[Loop].pui8Source[FileIndex] , pui8SourceString[FileIndex] , 255); } "pui8Source" is a double poiner and `pui8SourceString[FileIndex]` array of character pointers. Please let …

Do I understand that by using the following code [CODE] a = getchar(); b = getchar();[/CODE] , after pressing "1" and "Enter" keys ( Enter - to continue programs work), we can derive the following variables - [CODE]a = '1'; b= '\n';[/CODE] thanks in advance))

I'm supposed to define a function that removes all nodes with a specified value from a linked list. I have to use this structure: [CODE=c] typedef struct LIST { int Object; struct LIST *Next; } LIST; [/CODE] and here is the function I wrote [CODE=c]void LDeleteElem(LIST **List, int Elem) { …

ok, below is the code that i have tried and still not working; #include <stdio.h> int main () { char Name; int Age; int Date_Of_Birth; float Place_Of_Birth; float Email_Address; printf ("Name:"); scanf ("%c",&Name); printf ("Age:\n"); scanf ("%d",&Age); printf ("Date Of Birth:\n"); scanf ("%d",&Date_Of_Birth); printf ("Place Of Birth:\n"); scanf ("%s",&Place_Of_Birth); printf …