[c] Forum Topics

I have been working with popen to run iwlist and get essid from the output but that is making the code sloppy. Is there an API I could use instead to get SSID and other information? Iwlist is in the package wireless-tools in linux Thanks.

hi all!!!! im trying to do strcmp to a char in a structure and and char* and im getting a msg error: dereferencing pointer to incomplete type.... can somebody explain me what is that and give me an idea how to resolve it? thanx in advanced!

In undefined cases, anything can happen, the program can crash, or unexpected results be thrown up. What happens is up to the compiler. In unspecified cases, the Standard has deliberately not defined the exact behaviour of a few things so that the compiler is at liberty to do as it …

[code=c] printf ("%d",EOF);[/code] This gives me -1 [code=c]scanf ("%d",&a);[/code] [code=c]printf ("%d",a) [/code] where a is int (as EOF is an int), this gives me some junk value [code=c]printf ("%d",getch());[/code] This gives me 26 I've always given the input as ctrl+z (that's right, na!) What's the correct value of EOF ?

Hello, I have a problem of with game of life source code in C. I need a source code for game of life in C programming language Kindly send me a source code so that i can check my own source code.

Hi, I am trying to make a sublime text plugin that will compile some C code, but it uses python for these plugins. I already have a method of using g++ for single files, but I was wondering if anyone knows how to do it for a make file, here …

Hello, I'm checkng whether a file has been modified or not in order to refresh the content... However, i need a couple improvements : - How do I test the return value of stat to tell if it failed ? - The returned errno numbers may change between glibc versions, …

I am attempting to program a doubly linked list template. My program is setup with the class node defined in a header file,the list itself in a header file and finally the main in a separate cpp file which calls the list header. The list header calls the node header. …

Hi, I have this function to tokenize an input string: int tokenize(char input[], char* tokens[], char delimiter[]) {...} There are invocations of the function with different size of array. For instance, [CODE]char tokens[2][100]; tokenize(input, tokens, " "); char tokens1[3][10]; tokenize(tokens[0], tokens1, ":"); [/CODE]as you can see the token holder array …

[CODE]int main() { printf("Enter 0 or 1 :"); scanf("%d",&i_choice); if ( i_choice ==0 ) for( ;i_count_1 < i_number;) {------- ------ } if (choice == 1) for( ;i <= i_number;) {------- ------ }[/CODE] Here I raed a user input ( 0 or 1) So as per i/p I've to change the …

I want to know how to write a program that moves for example C:\ex.exe to D:\ex.exe.... What header to use? stdio.h? what function to use? Can i get a link of source(this program) ?

I know that ++a is faster than a++ because a++ has to first store the previous value of a at some temporary location and then increment a and then return the saved value, whereas ++a simply increments a and returns the pointer to the incremented value. Since, both a++ and …

My question is: If i'm the customer, how can i edit the quantity shown on the overview so that i can afford to pay the totalprice(if i've ordered too much) and delete some on the overview if i want to delete it(really short on money). And if i'm the owner …

I am working on getting a string into this function but there are already to many arguments. [CODE] char interface[10]; if (!(in = popen("iwlist %s scan","r"))) /*Need interface string here */ { /*to be added */ } [/CODE] I tried to add ",interface" after "r" but it said to many …

Hello, i have a function that starts searching for all files that match the given file name and Recursively traverses itself into sub directories and does the same thing and when a file is found i should output its path starting from the first directory that was given to the …

How can one make a program repeat a set of lines of code.like for example [CODE]printf("enter the value of x:"); scanf("%d",&x); for(i=0;i<1;i++){ value+= arr[i]*(x,i); printf("\n The value of the polynommial is %ld",value); }[/CODE] How can you make it repeat so that it continues to read x and give out values

Hi, I am trying to implement some distributed algorithm (minimum spanning tree) where each node is represented by a process running in a different machine. Each edge represented by a client server communication channel. Suppose host0 is connected to host1, host2 and host5. I create 1 server sockets in each …

please answer me.show why my code does not loop and it repeats question number 1. [CODE] #include <stdio.h> #include <stdlib.h> #include <time.h> /*prints the ASCII art for "FAIL"*/ void ascii_fail(void) { printf(" /%c__%c /%c %c\n", 92,92,92,92); printf(" /:/ _/_ /::%c %c ___ \n", 92,92); printf(" /:/ /%c__%c /:/%c:%c %c /%c__%c\n", …

3. A taxi charges an amount of 25.00 pesos for the first 300 meters and a fix rate of 15.00 pesos for every 200 meters thereafter. Any distance covering the next 200 meters zone (or less) is still charged 15.00. Create a program that would input the DISTANCE in kilometers …

when i am writing c program in turboC i encounter error as "unable to create exe file". how to trouble shoot this and why i got this error.

Hi This my first c programme.It asks 5 objective questions and displays the result at the end. [B]But when i compile it and run, it asks only for variables A,C and E .It doesn't ask for the inputs to question no. 2 and 4.It only displays these questions and skip …

I am trying to search a file (I have searched the forums and have found some treads but they do not really help me to do what I want) directly using fseek and strcmp but its buggy and gives off by one errors and such. The reason I did not …

Hi, Is there a way to set stderr such that it does not print on screen rather on file. I have spawned a couple of threads and they are dumping all the error messages on the screen like a maniac and giving me a headache. Some help would be highly …

Hello. Could anyone tell me how to convert [B]roman[/B] numbers to [B]decimal[/B] numbers. Can anyone provide some example for it? Thanks a lot. regist1

hi im a newbie,can u give me an example of math problems using c language...preferably calculus using else-if statement,or a looping satement..thank u very much..godbless(",)

Greetings. I need help making a dynamic array with 3 columns, the problem is that i don't know at run-time how many rows there must be allocated. So i need to allocate one row every time. I have this as code: [CODE] gchar ***servers_array = NULL; servers_array = realloc(servers_array, (detected_netstat_servers …

i am writting a program for finding the no of keyword ( occurances ) and operators occurances. i am taking the all the keywords in an array and all the operators in seperate arrays for each category of operators. char *kw[] = {"auto","break"..."while" }; char *Arth_op[] = { "%","*","+","-","/"}; according …

Hi, i have a doubt regarding conditional macros and undef directive. can i use undef for a function like - macro, by just specifying the name of the macro with out specifying the argument list as written in line 8. is the code correct with out these statements: [ICODE] #define …

Hai, This is a source code written in turbo c for car racing game as a part of my higher secondary project. May I get some advices to improve it? 1.Did I use the real method to constitute motion in c? 2.How can I include sound in c? { Function …

Please help with the following code,,, It is compiling though but During run its stating that [B]"Your code has stopped its execution with a non-zero (failure) exit value.This is generally due to run time Exceptions like Memory Access Violation and Floating Point Exception. Please check your code for run time …

hi,.im a first year student taking information technology, never mind where i am studying.,,,i just want to ask some tips to understand easily turbo c.,.

Hi all... First post here, be gentle. I'm trying to get this to work, and there's no output. This is from the K&R book [v2] exercise 1-14, the prompt is in the header. I added comments for readability, and please comment on anything you believe needs improvement. Thank you for …

hello everyone .. im writting a C program that requires to insert integers from a text file .. the contents of the text file are: 1:2:4 4:12:5 13:7:5 1:20:4 how can i read each number and define it as an integer ???? please HELP !! [CODE] #include <stdio.h> int main() …

I have one or more functions separate from main() , that besides the return value , must also return the time it tooked to process. How can I do that ?

BIQ-005-Accelerator You’ve been given an assorted set of gears. Each gear has a different number of teeth – the notches on a gear that interlock with notches on another gear to transmit speed. You have a couple of belts one coupled to an input and the other for the output. …

is it possible in c program to run two processes at the same time.For example i want to run a timer along with my application .The timer must be shown on the screen.Thanks in advance

I have some problem understanding a full adder In a full adder there is a Cin and Cout... what i don't understand is what do I need to Cout. I just don't undestand the value of Cout in the full adder Thanks

Hello, When i run my program it shows just segmentation fault. As my knowledge, segmentation fault can occur for pointer and memory related fault. But i could not find out my mistake. Please see some part of code(maybe, that is related to segmentation fault): [CODE] char *state_in; //state_in = malloc(1024); …

Hello: My problem is: "The game of Life takes place on a 2d array of cells, each of which may contain an organism. Let occ(i) be the no. of cells adjacent to cell i that are occupied by an organism is obtained from the previous generation appling the following rules: …

hi! i'm new here in daniweb.so pardon me for disturbing you all.lol i would like to present you a little problem. i want to design a program that will generate wnted number of arithmetic statements and it would be answered by the one who will use it. and at the …

[QUOTE]when i tried to copy structure array of name into another string array i get this error message warning: passing argument 1 of 'strcpy' makes pointer from integer without a cast [/QUOTE] [CODE] /* copying structure array name into another string array*/ #include<stdio.h> #include<string.h> int main(){ int i=0; int j,k,l,m; …

`I am trying to limit the amount of characters that a user can enter for the address(/ in the input buffer): for example (if maximum allowed input was 30 then ): ->4 Mary drive lane, Mt. Pyle, A<- when the user typed that I am trying to get the curser …

I have a question can you help me?? In this assignment you are going to design and implement a Dictionary system that enables the user to efficiently add, remove, and search for words using a menu-driven system. The words will be organized as shown in figure 1 below. As you …

[QUOTE][QUOTE] even after passing all name to bubble sort i get result of unsorted nams..so please help me in this issue [/QUOTE][/QUOTE] [CODE] /* enter customer detail in structure and put its name in asscending order*/ #include<stdio.h> #include<string.h> int main(){ int i=0; int j,k,l,m; int choice=1; char temp[10]; char words[20]; …

Hi, Can someone elaborate why the following (the if conditional) differs [CODE=c] int main(){ const char *filename = "test.txt"; int ifd; if((ifd=open(filename,O_RDONLY))<3) err(EX_NOINPUT, "%s", filename); fprintf(stderr,"ifd is:%d\n",ifd); off_t bytes_in = lseek(ifd, (off_t)(-4), SEEK_END); return 0; } [/CODE] vs [CODE=c] int main(){ const char *filename = "test.txt"; int ifd; if(ifd=open(filename,O_RDONLY)<3) err(EX_NOINPUT, …

The program is to output the total amount for cinema ticket of different category. I compile it with no error but the window disappears when i enter number of ticket. Can someone help me check what's wrong with my code or formula? Totally idea with it :( [code]/*Cinema Ticket Ordering …

I've been programmin on and off for some time. But today I saw something I hadnt seen before Some thing like [CODE=c] void error OF((const char *msg)); void gz_compress OF((FILE *in, gzFile out)); #ifdef USE_MMAP int gz_compress_mmap OF((FILE *in, gzFile out)); #endif void gz_uncompress OF((gzFile in, FILE *out)); void file_compress …

Lets say I have two functions that I want to run simultaneously for different purposes as example a function handles an XML RPC requests and the other function handles an IRC connection to an IRCD. what my goal would be to avoid program hang ups on user requests. Is pthreads …

Hi guys, I'm pretty much a C newbie, but I've dabbled in other languages over the years. For my current project I'm using mikroElektronica Pro C on a PIC microcontroller. I've got a 2-dimensional array defined like this: [CODE]const char FONTTABLE[96][5]= { {0x00,0x00,0x00,0x00,0x00}, {0x00,0x00,0x5f,0x00,0x00}, {0x00,0x07,0x00,0x07,0x00}, /** [90 rows snipped] **/ …

How can I do it - with pointer and only one loop ? for exmpl function - unsigned int dif(const char *str) [CODE] counter = 0; for(i = 0; i < N; i++) A[i] = 0; do { A[tmp % 10]++; tmp /= 10; } while(tmp); for(i = 0; i …