1) They probably differ in being constants or non-constants.
3) It's "3d" because you have an extra pointer in the way. Every level of pointers requires another dereferencing operation to access it. One level pointer requires one. Two level pointer requires two. Three level pointer requires three. 97 level pointer requires 97. That is the pattern.
The first dereferencing operation gets rid of is x itself; once you do so, you are essentially accessing y. The next level of pointers points to individual rows inside y. The last level gets you an individual cell in that row.
The diagram is x -> y -> row -> column.
These 2 Users Gave Thanks to Corona688 For This Post:
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)
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)
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)
Hi all,
Can anyone provide help with getting the right syntax regarding array/pointers in C in the following code? Can't locate a specific example which clarifies this...
Say I declare a typedef to an array of pointers to some type...
/**
* An array of ptrs to sections
*/
typedef... (4 Replies)
if i create an array of pointers to a structure "struct node" as:
struct node *r;
and create "n" number of "linked lists" and assign it to the various struct pointers r using some function with a return type as structure pointer as:
r=multiplty(.......) /*some parameters*/
is... (2 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)
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)
how to copy content of character pointer to character array in c programming..
char *num;
char name=num; (1 Reply)
Discussion started by: zinat
1 Replies
LEARN ABOUT DEBIAN
tk::tablematrix::spreadsheet
TableMatrix::Spreadsheet(3pm) perl/Tk Documentation TableMatrix::Spreadsheet(3pm)NAME
Tk::TableMatrix::Spreadsheet - Table Display with Spreadsheet-like bindings.
SYNOPSIS
use Tk;
use Tk::TableMatrix::Spreadsheet;
my $t = $top->Scrolled('Spreadsheet', -rows => 21, -cols => 11,
-width => 6, -height => 6,
-titlerows => 1, -titlecols => 1,
-variable => $arrayVar,
-selectmode => 'extended',
-titlerows => 1,
-titlecols => 1,
-bg => 'white',
);
DESCRIPTION
Tk::TableMatrix::Spreadsheet is a Tk::TableMatrix-derived widget that implements some bindings so the resulting widget behaves more like a
spreadsheet.
Bindings Added:
o
Row/Col resize handles appear when the cursor is placed over a row/col border line in the rol/col title area.
Dragging these handles will resize the row or column. If multiple rows or columns are selected, then the new row/col size will apply to
all row/cols selected.
Note: With the base Tk::TableMatrix, it is possible to resize the row/cols by dragging on any cell border. To be more spreadsheet-like,
Tk::TableMatrix::Spreadsheet defaults to enable row/col resizing only thru the title row/col dragging. To override this default behavoir,
set the -resizeborder option to 'both' at startup.
o
A popup menu for row/col insert/delete appears when the mouse is right-clicked in the row/col title areas.
o
Cells activate (i.e. the contents become edit-able) only when the cell is double-clicked or the F2 button is pressed. The default
Tk::TableMatrix behavior is for the cell to be activated when the cell is single-clicked.
o
The Escape key causes any changes made to a cell to be canceled and the current selection cleared.
o
The return key causes the the current cell to move down.
o
The tab (or shift tab) key causes the current cell to be moved to the right (left).
o
The delete key will delete the current selection, if no cell is currently active.
o
The Mouse button 2 (middle button) paste from the PRIMARY. (Control-v pastes from the clipboard).
Additional Information
Widget methods, options, etc, are inherited from the Tk::TableMatrix widget. See its docs for additional information.
Tk1.23 2007-01-09 TableMatrix::Spreadsheet(3pm)