I am attempting to create an array of function pointers. The examples I follow to do this are from:
support.microsoft.com/en-us/help/30580/how-to-declare-an-array-of-pointers-to-functions-in-visual-c
... (3 Replies)
Hello, I read from a book exercise for a challenge. How to print out each letter of char array a by two different pointers pa and ppa in the example?
I have tried my code for letter "r" by testing without full understanding as only the first one worked.
#include<stdio.h>
int main()
{
char... (17 Replies)
Hello forum memebers
As iam new to C++ programming i am little bit confuse to understand the function pointers.
Please help me to understand the function pointers with examples are suggest me good site for this,Its better if it have picturial representation ie any PPTS available in Google.... (2 Replies)
I have a special character called ô. When it is declared as a character variable its showing it can be printed. But when it is declared as a character pointer variable its showing it cannot be printed. I am just wondering why its happening like this..
c1 = '@';
c2 = 'ô';
char *fp;
fp="XXô";
if... (1 Reply)
I am new to shared pointer conceot in C++ and hence require some clarification:
For example:
class A
{
public:
virtual ~A()
{
}
int x;
};
typedef boost::shared_ptr<A>... (1 Reply)
Hi all. I am trying to use restricted pointers to allow the gcc compiler optimize the code, but I have not been able to make it work so far. I am testing with this code:
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <sys/time.h>
void vecmult(int n, int * restrict a, int... (0 Replies)
Hi I mash with pointers in C. I solve this problem about 5 hours and I don't know how I should continue.
void InsertFirst (tList *L, int val) {
tElemPtr new;
if((new = malloc(sizeof(tElemPtr))) == NULL) Error();
new->data = val;
new->ptr = L->frst;
L->frst = new;... (2 Replies)
hi all,
let say i have a pointer exit, and this exit will store some value. how can i store the value that the pointer points to into an array and then print them out from the array.
thanks in advance (2 Replies)
I am pondering the next question:
Can I safely sare objects that have virtual functions (i.e. have
virtual function table pointers) between two processes ?
Where will the pointers point to in each process ?
What I am afraid of is that in the creating process the pointer
will indeed point to... (2 Replies)
memchr(9F) Kernel Functions for Drivers memchr(9F)NAME
memchr, memcmp, memcpy, memmove, memset - Memory operations
SYNOPSIS
#include <sys/ddi.h>
void *memchr(const void *s, int c, size_t n);
int memcmp(const void *s1, const void *s2, size_t n);
void *memcpy(void *restrict s1, const void *restrict s2, size_t n);
void *memmove(void *s1, const void *s2, size_t n);
void *memset(void *s, int c, size_t n);
INTERFACE LEVEL
Solaris DDI specific (Solaris DDI).
PARAMETERS
dst Pointers to character strings.
n Count of characters to be copied.
s1, s2 Pointers to character strings.
DESCRIPTION
These functions operate as efficiently as possible on memory areas (arrays of bytes bounded by a count, not terminated by a null charac-
ter). They do not check for the overflow of any receiving memory area.
The memchr() function returns a pointer to the first occurrence of c (converted to an unsigned char) in the first n bytes (each interpreted
as an unsigned char) of memory area s, or a null pointer if c does not occur.
The memcmp() function compares its arguments, looking at the first n bytes (each interpreted as an unsigned char), and returns an integer
less than, equal to, or greater than 0, according as s1 is lexicographically less than, equal to, or greater than s2 when taken to be
unsigned characters.
The memcpy() function copies n bytes from memory area s2 to s1. It returns s1. If copying takes place between objects that overlap, the
behavior is undefined.
The memmove() function copies n bytes from memory area s2 to memory area s1. Copying between objects that overlap will take place cor-
rectly. It returns s1.
The memset() function sets the first n bytes in memory area s to the value of c (converted to an unsigned char). It returns s.
USAGE
Using memcpy() might be faster than using memmove() if the application knows that the objects being copied do not overlap.
CONTEXT
These functions can be called from user or interrupt context.
SEE ALSO bcopy(9F), ddi_copyin(9F), strcpy(9F)
Writing Device Drivers
SunOS 5.10 7 Sep 2004 memchr(9F)
