#include <stdlib.h>
typedef struct struct_type
{
int something;
} struct_type;
int main(void)
{
/* Allocate an array of 32 pointers to struct_type */
struct_type **ptrarray;
ptrarray=malloc(sizeof(struct_type *)*32);
/* Do whatever */
/* ... */
/* Deallocate what we allocated before exiting */
free(ptrarray);
return(0);
}
Dear friends
I have a bit basic doubts in pointers and the structures inter relationships.
the first one.
static struct apvt {
int dead;
int pending;
int abouttograb;
}*agents=NULL;
what agents pointer is... (1 Reply)
void main()
{
int a={1,2,3,4,5,6,7,8,9,10};
int *p=a;
int *q=&a;
cout<<q-p+1<<endl;
}
The output is 10, how?
if we give cout<<q it will print the address, value won't print....
if we give cout<<p it will print the address, value won't print....
p has the base addr; q... (1 Reply)
Hi,
I am trying to divide my input to different type of out puts for some other use.
ex: logical_name : jkl00001
expected out put : model=jkl and num=00001
here is the code i actually written
/*******************************************************************/
void... (11 Replies)
If one wants to get a start address of a array or a string or a block of memory via a function, there are at least two methods to achieve it:
(1) one is to pass a pointer-to-pointer parameter, like:
int my_malloc(int size, char **pmem)
{
*pmem=(char *)malloc(size);
if(*pmem==NULL)... (11 Replies)
I have a file that reads File (X.txt)
Contents of record 1:
rdrDESTINATION_ADDRESS (String) "91 971502573813"
rdrDESTINATION_IMSI (String) "000000000000000"
rdrORIGINATING_ADDRESS (String) "d0 movies"
rdrORIGINATING_IMSI (String) "000000000000000"
rdrTRAFFIC_EVENT_TIME... (0 Replies)
hi guys!
Is there such a thing as double void pointer dynamic allocation?
And if so is it something like this?
int n;
void** a;
a=malloc(n*sizeof(void*)); (12 Replies)
This code is to print out the program name and arguments list one by one:
1 #include<stdio.h>
2
3 void main(int argc, char *argv)
4 {
5 int iCount = 0;
6 while (iCount < argc) {
7 printf("argc:%d\t%s\n",iCount, argv);
8 ... (14 Replies)
Here are two programs that pass a pointer to a variable but behave differently. Shouldnt the i in second program be 0 after the function call?
#include<stdio.h>
void changeI(int *i)
{
*i = 10;
}
int main(void)
{
int i=5;
printf("%d before\n", i);
changeI(&i);
printf("%d... (1 Reply)
Discussion started by: dragonpoint
1 Replies
LEARN ABOUT PHP
t_free
t_free(3NSL) Networking Services Library Functions t_free(3NSL)NAME
t_free - free a library structure
SYNOPSIS
#include <xti.h>
int t_free(void *ptr, int struct_type);
DESCRIPTION
This routine is part of the XTI interfaces which evolved from the TLI interfaces. XTI represents the future evolution of these interfaces.
However, TLI interfaces are supported for compatibility. When using a TLI routine that has the same name as an XTI routine, the tiuser.h
header file must be used. Refer to the TLI COMPATIBILITY section for a description of differences between the two interfaces.
The t_free() function frees memory previously allocated by t_alloc(3NSL). This function will free memory for the specified structure, and
will also free memory for buffers referenced by the structure.
The argument ptr points to one of the seven structure types described for t_alloc(3NSL), and struct_type identifies the type of that struc-
ture which must be one of the following:
T_BIND struct t_bind
T_CALL struct t_call
T_OPTMGMT struct t_optmgmt
T_DIS struct t_discon
T_UNITDATA struct t_unitdata
T_UDERROR struct t_uderr
T_INFO struct t_info
where each of these structures is used as an argument to one or more transport functions.
The function t_free() will check the addr, opt and udata fields of the given structure, as appropriate, and free the buffers pointed to by
the buf field of the netbuf structure. If buf is a null pointer, t_free() will not attempt to free memory. After all buffers are freed,
t_free() will free the memory associated with the structure pointed to by ptr.
Undefined results will occur if ptr or any of the buf pointers points to a block of memory that was not previously allocated by
t_alloc(3NSL).
RETURN VALUES
Upon successful completion, a value of 0 is returned. Otherwise, a value of -1 is returned and t_errno is set to indicate an error.
VALID STATES
ALL - apart from T_UNINIT.
ERRORS
On failure, t_errno is set to the following:
TNOSTRUCTYPE Unsupported struct_type requested.
TPROTO This error indicates that a communication problem has been detected between XTI and the transport provider for
which there is no other suitable XTI error (t_errno).
TSYSERR A system error has occurred during execution of this function.
TLI COMPATIBILITY
The XTI and TLI interface definitions have common names but use different header files. This, and other semantic differences between the
two interfaces are described in the subsections below.
Interface Header
The XTI interfaces use the header file, xti.h. TLI interfaces should not use this header. They should use the header:
#include <tiuser.h>
Error Description Values
The t_errno value that can be set by the XTI interface and cannot be set by the TLI interface is:
TPROTO
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO t_alloc(3NSL), attributes(5)SunOS 5.10 7 May 1998 t_free(3NSL)