06-21-2011
Quote:
Originally Posted by
mscoder
the programme goes into an infinite loop whenever i try to display the list pointed by add_result..the functions add() and display() work fine in other cases..
Can you post this piece of code...seems like the condition for stopping the display pointed by add_result may not be right.
10 More Discussions You Might Find Interesting
1. Programming
i have a function:
char *pcCityIdToCountryName(ADMIN_DB_DATA *pstHEader, unit uiCityID)
this returns a pointer to CountryName if cityId is given.
to retrieve countryname i give:
char *CountryName;
CountryName = pcCityIdToCountryName(..................);
but when i compile it is giving :... (5 Replies)
Discussion started by: jazz
5 Replies
2. Programming
$ gcc -Wall -Werror struct.c
struct.c: In function `main':
struct.c:18: error: dereferencing pointer to incomplete type
$ cat struct.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/*Declaration of structure*/
struct human
{
char *first;
char gender;
int age;
} man,... (3 Replies)
Discussion started by: amit4g
3 Replies
3. UNIX for Dummies Questions & Answers
All ..
I am having a pointer array . And trying to store the addess into that pointer array . please see below the problem i faced
code:
int cnt1;
char *t_array;
char *f_array;
for(cnt1=0; cnt1<1000; cnt1++)
{
t_array =... (1 Reply)
Discussion started by: arunkumar_mca
1 Replies
4. Programming
Dear friends,
First all I applogize for posting such a simple question , as I love this forum and forum participants thats why I am posting my problem here..
Why I am getting error when I remove the commented lines
typedef unsigned int U;
typedef struct {U c; U d;} vec32;
... (1 Reply)
Discussion started by: user_prady
1 Replies
5. Programming
Hello all
im trying to build function that will return void function pointer
what is mean is ( not working )
the main function
void * myClass::getFunction(int type){
if(type==1)
return &myClass::Test1;
if(type==2)
return &myClass::Test2;
}
void myClass::Test1(){... (1 Reply)
Discussion started by: umen
1 Replies
6. Programming
Hi.
Problem: I have to parse the payload of a packet. The payload could be in Big Endian Format (network byte order) or little. That depends on a flag present in the header of the packet.
Solution: A horrible solution could be to check for that flag everytime I have to read a field in the... (11 Replies)
Discussion started by: emitrax
11 Replies
7. Programming
Hi guys.
how a functions such fdopen, ... can return pointer?
are these functions use static memory(variables)? (6 Replies)
Discussion started by: majid.merkava
6 Replies
8. Programming
i have an array like
#define NUM 8
....
new_socket_fd = accept(socket_fd, (struct sockaddr *) &cli_addr, &client_length);
char *items = {"one", "two", "three", "four", "five", "six", "seven", "eight"};
char *item_name_length = {"3", "3", "5", "4", "4", "3", "5", "5"};
... (1 Reply)
Discussion started by: omega666
1 Replies
9. Programming
Hello,
The purpose of the program is to print a sub string from the prompt inputs. I do not understand why char pointer does not work but char array will for line 40 and Line 41.
./a.out thisisatest 0 8
substring = "thisisat"And my code is:
#include <stdio.h>
#include <stdlib.h>
#include... (29 Replies)
Discussion started by: yifangt
29 Replies
10. Programming
I am struggling with the pointer to 2D-array (cf: 2D array of pointers). Can anybody help me elaborate how the pointer x moves in the memory to access the individual of y, especially the high lighted lines?
I have talked to one of the curators of the forum, but I am still not quite clear.
Here... (1 Reply)
Discussion started by: yifangt
1 Replies
scandir(3) Library Functions Manual scandir(3)
NAME
scandir, alphasort - Scans or sorts directory contents
LIBRARY
Standard C Library (libc.a)
SYNOPSIS
#include <sys/types.h> #include <sys/dir.h>
int scandir ( char *dir_name, struct dirent * (*name_list[ ]), int (*select) ( struct dirent *dir ), int (*compare) (
struct dirent **dir1, struct dirent **dir2 ) );
int alphasort ( struct dirent **dir1, struct dirent **dir2 );
PARAMETERS
Points to the directory name. Points to the array of pointers to directory entries. Points to a user-supplied function that is called by
the scandir() function to select which entries to include in the array. Points to a user-supplied function that sorts the completed
array. Points to a dirent structure. Points to a dirent structure.
DESCRIPTION
The scandir() function reads the directory pointed to by the dir_name parameter. It then uses the malloc() function to create an array of
pointers to directory entries. The scandir() function returns the number of entries in the array and, through the name_list parameter, a
pointer to the array.
The select parameter points to a user-supplied function that the scandir() function calls to select which entries to include in the array.
The selection routine is passed a pointer to a directory entry and returns a nonzero value for a directory entry that is included in the
array. If the select parameter is a null value, all directory entries are included.
The compare parameter points to a user-supplied function that is passed to the qsort() function to sort the completed array. If the compare
parameter is a null value, the array is not sorted.
The memory allocated to the array can be deallocated by freeing each pointer in the array, and the array itself, with the free() function.
The alphasort() function alphabetically compares the two dirent structures pointed to by the dir1 and dir2 parameters. This function can be
passed as the compare parameter to either the scandir() function or the qsort() function. A user-supplied subroutine may also be used.
RETURN VALUES
The scandir() function returns -1 if the directory cannot be opened for reading or if the malloc() function cannot allocate enough memory
to hold all the data structures. If successful, the scandir() function returns the number of entries found.
The alphasort() function returns the following values: Less than 0 (zero): The dirent structure pointed to by the dir1 parameter is lexi-
cally less than the dirent structure pointed to by the dir2 parameter. 0 (zero): The dirent structures pointed to by the dir1 parameter
and the dir2 parameter are equal. Greater than 0 (zero): The dirent structure pointed to by the dir1 parameter is lexically greater than
the dirent structure pointed to by the dir2 parameter.
RELATED INFORMATION
Functions: malloc(3), opendir(3), qsort(3) delim off
scandir(3)