microsoft reporting services qr code POINTERS AND REFERENCES in Software

Print QR Code 2d barcode in Software POINTERS AND REFERENCES

POINTERS AND REFERENCES
QR Code Scanner In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Making QR Code 2d Barcode In None
Using Barcode creation for Software Control to generate, create QR-Code image in Software applications.
[CHAP. 6
Scan QR Code JIS X 0510 In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
Printing QR In C#
Using Barcode printer for VS .NET Control to generate, create Denso QR Bar Code image in .NET framework applications.
The next example illustrates a useful application of pointer arrays. It shows how to sort a list indirectly by changing the pointers to the elements instead of moving the elements themselves. This is equivalent to the Indirect Bubble Sort shown in Problem 5.12.
Denso QR Bar Code Generation In VS .NET
Using Barcode printer for ASP.NET Control to generate, create QR-Code image in ASP.NET applications.
Drawing QR Code ISO/IEC18004 In Visual Studio .NET
Using Barcode maker for .NET Control to generate, create Quick Response Code image in VS .NET applications.
EXAMPLE 6.14 Indirect Bubble Sort // The Indirect Bubble Sor t sorts void sort(float* p[], int n the pointer array:
Generating QR Code 2d Barcode In Visual Basic .NET
Using Barcode generation for .NET Control to generate, create QR Code ISO/IEC18004 image in .NET applications.
Code 3 Of 9 Encoder In None
Using Barcode creation for Software Control to generate, create Code-39 image in Software applications.
float* temp; for (int i = 1; i c n; i++) for (int j = 0; j < n-i; j++)
UCC-128 Encoder In None
Using Barcode drawer for Software Control to generate, create UCC - 12 image in Software applications.
Encode Code-128 In None
Using Barcode drawer for Software Control to generate, create Code-128 image in Software applications.
if (*p[jl > *p[j+ll) {
Generate Barcode In None
Using Barcode generator for Software Control to generate, create barcode image in Software applications.
UPC A Drawer In None
Using Barcode drawer for Software Control to generate, create Universal Product Code version A image in Software applications.
temp = PM; PC1 = p[j+ll; PC+11 = temp;
Encoding UPC - E1 In None
Using Barcode encoder for Software Control to generate, create UPC - E1 image in Software applications.
Generate Code-39 In Objective-C
Using Barcode generation for iPhone Control to generate, create Code 3/9 image in iPhone applications.
On each iteration of the inner loop, if the floats of adjacent pointers are out of order, then the pointers are swapped. 6.13 POINTERS TO POINTERS
Making UPC-A Supplement 2 In Java
Using Barcode creation for Java Control to generate, create UPC A image in Java applications.
GS1 128 Reader In Visual C#
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
A pointer may point to another pointer. For example,
Code 128 Code Set C Creation In Objective-C
Using Barcode creation for iPhone Control to generate, create Code 128 Code Set C image in iPhone applications.
Barcode Encoder In VS .NET
Using Barcode creator for ASP.NET Control to generate, create bar code image in ASP.NET applications.
char c = 't'; char* pc = &c; char** ppc = &PC; // changes the value of c to 'WI char*** pppc = &ppc; ***pppc = w ; I
Paint Code-39 In Java
Using Barcode generation for Android Control to generate, create Code 39 image in Android applications.
Creating Bar Code In VB.NET
Using Barcode drawer for .NET framework Control to generate, create bar code image in .NET framework applications.
We can visualize these variables like this:
PPPC PPC
CHAP. 61
POINTERS AND REFERENCES
The assignment * **pppc = I w I refers to the contents of the address by the address ppc that is pointed to by the address pppc. 6.14 POINTERS TO FUNCTIONS
that is pointed to
Like an array name, a function name is actually a constant pointer. We can think of its value as the address of the code that implements the function. A pointer to a function is simply a pointer whose value is the address of the function name. Since that name is itself a pointer, a pointer to a function is just a pointer to a constant pointer. For example,
int f(int); int (*pf) pf = &f; (int); // declares the function f // declares the function pointer pf // assigns the address of f to pf
We can visualize the function pointer like this:
The value of function pointers is that they allow us to define functions of functions. This is done by passing a function pointer as a parameter to another function.
EXAMPLE 6.15 The Sum of a Function
The sum0
function has two parameters: the function pointer pf and the integer n:
int sum(int (*Hint), int); int square(int); int cube(int); main0 tout -CC sum(square,4) CC endl; tout CC sum(cube,4) CC endl; //1+4+9+16 // 1 + 8 + 27 + 64
The call sum(square,4)
square(3)
computes and returns the sum square(l) + square (4 ) . Since square (k) computes and returns k*k,
+ square(2) + the sum ( ) function
returns 1 + 4 + 9 + 16 = 30.
POINTERS AND REFERENCES
[CHAP. 6
Here are the function definitions and the output:
// Returns the sum f(0) + f(1) + f(2) + . . . + f(n-1): int sum(int (*pf)(int k), int n) int s = 0; for (int i = 1; i c= n; i++) s += (*pf) (i); return s;
int t
square(int return k*k;
int cube(int k) i return k*k*k;
) ,. : ; ,:. ; , :. : 1 ._,,: , .;- . : i . ,. . Z. . : : ; -;.:.y;, .:-.,;:,: .ll I: ; -1::. ,.::, ;y ,.: -j::,i-,~,,;::~:.,~.]ii l;,~Il:i
3Q ~j.jQ I ,:
: ,
_ ,:
. .
: , .
_. : 1
( ,_, _
:,.:-I:I- ; ,:~ .i:j~.:,~:-::.~;:,,; ...
._. . . .:_ ....... ,...., The sum ( ) function evaluates the function to which pf points, at each of the integers 1 through n, and returns the sum of these n values. Note that the declaration of the function pointer parameter pf in the sum ( ) function s parameter list requires the dummy variable k. .
6.15 NUL, NULL, AND void The constant o (zero) has type int. Nevertheless, this symbol can be assigned to all the fundamental types:
char c = 0; short d = 0; int n = 0; unsigned u = 0; float x = 0; double z = 0; // // // // // // initializes initializes initializes initializes initializes initializes c d n u x z to to to to to to the the the the the the char '\O' short int 0 int 0 unsigned int 0 float 0.0 double 0.0
In each case, the object is initialized to the number zero. In the case of type char, the character c becomes the null character; denoted by I\ o I or NUL, it.is the character whose ASCII code is 0. The values of pointers are memory addresses. These addresses must remain within that part of memory allocated to the executing process, with the exception of the address 0x0. This is called .the NULL pointer. The same constant applies to pointers derived from any type:
char* pc = 0; short* pd = 0; int* pn = 0; unsigned* pu = 0; float* px = 0; double* pz = 0; // // // // // // initializes initializes initializes initializes initializes initializes pc pd pn pu px pz to to to to to to NULL NULL
Copyright © OnBarcode.com . All rights reserved.