Wait a minute!!!.....Can anyone explain why there are multiple addresses to get the letter "r" ?
It has to do with how memory is organized.
Your big array is one block of memory organized linearly, like
...and the only difference is the equation the compiler generates to access it.
If it's an n*2 array, the compiler does something like arr[(2*index2)+index1] to access the array. If you really wanted, you could ignore index2, and just step through the entire array with index1, but if you don't know what you're doing you might step beyond the bounds of the array by accident.
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)
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. 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)
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)
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)
Hi All,
I am using the array of pointers and storing the address of string.This is a global list.
So i am using extern to give the reference of this list to another file and using reading the data from this string.
But list is being corrupted and string is missing some characters in... (2 Replies)
Please find the below program. the requirement and description of the program also given:
ganesh@ubuntu:~/my_programs/c/letusc/chap9$ cat fa.c.old
/* Program : write a program to count the number of 'e' in thefollowing array of pointers to strings:
char *s = {
"We will teach you how... (12 Replies)
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)
Discussion started by: spflanze
3 Replies
LEARN ABOUT PHP
dbase_create
DBASE_CREATE(3) 1 DBASE_CREATE(3)dbase_create - Creates a databaseSYNOPSIS
int dbase_create (string $filename, array $fields)
DESCRIPTION dbase_create(3) creates a dBase database with the given definition.
Note
When safe mode is enabled, PHP checks whether the files or directories being operated upon have the same UID (owner) as the script
that is being executed.
Note
This function is affected by open_basedir.
PARAMETERS
o $filename
- The name of the database. It can be a relative or absolute path to the file where dBase will store your data.
o $fields
- An array of arrays, each array describing the format of one field of the database. Each field consists of a name, a character
indicating the field type, and optionally, a length, and a precision.
Note
The fieldnames are limited in length and must not exceed 10 chars.
RETURN VALUES
Returns a database link identifier if the database is successfully created, or FALSE if an error occurred.
EXAMPLES
Example #1
Creating a dBase database file
<?php
// database "definition"
$def = array(
array("date", "D"),
array("name", "C", 50),
array("age", "N", 3, 0),
array("email", "C", 128),
array("ismember", "L")
);
// creation
if (!dbase_create('/tmp/test.dbf', $def)) {
echo "Error, can't create the database
";
}
?>
SEE ALSO dbase_open(3), dbase_close(3).
PHP Documentation Group DBASE_CREATE(3)