; *value immutable, value variable int* const value; Value is immutable, *value variable const (int *) value; (int *) is a type,value immutable, *value variable//logically understood so that compilation cannot be passed and requires TypeDef int* NEWTYPE; The const int* Const Value;//*value,value is immutable to give a const pointer to a non-const object, so it cannot be changed. However, Const cannot be assigned to non-const unless cast first, const int x=100; int *p= (int*) x; *p++; Class
Android app Add (create) and delete and determine if there is a desktop shortcut-android novice-eoe Mobile Developer Forum-Powered by discuz!
The Android Desktop program provides the ability to add and remove desktop shortcuts and determine if a shortcut exists.Just pass in the shortcut title, icon, and click on the shortcut to execute the app intent. The code is as follows: 1. Add desktop shortcuts to Android /*** Add desktop shortcuts to the current app** @param
that in C, Java, or C #, there will always be one or another condition judgment, so how does one perform conditional jump in the assembly?
1. The jcxz command jcxz is a conditional transfer instruction. All conditional transfer instructions are short transfer instructions. The corresponding machine code contains the transfer displacement, not the target address. The IP address ranges from-128 ~ 127.
Command Format: jcxz label
(If (CX) = 0, it is tran
Assume Cs: codedata segment dB 10 DUP (0) Data endscode segmentstart: mov ax, 13666 mov BX, data mov ds, BX mov Si, 0 call DTOC mov DH, 8 mov DL, 3 mov Cl, 2 call show_str mov ax, 4c00h int 21 h DTOC: Push dx push ds push Si push cx push ax push di mov Di, 0 mov BX, 10 mov Si, 0 pushnumber:; press data into the stack (otherwise the display order is reversed) mov dx, 0; DX must be assigned 0 each time; otherwise, the Division is incorrect Div BX add DL
about anything that does not reference a parameter (unless you are really interested in using this parameter, ). Suppose you have a function that brings two parameters, but you only use one of them:int SomeFunction(int arg1, int arg2){ return arg1+5;}When using/W4, the compiler complains:“warning C4100: ''arg2'' : unreferenced formal parameter.”To cheat the compiler, you can add unreferenced_parameter (arg2 ). Now the compiler will shut down when compiling your function that references arg2.
[x] [x];
Bool use [x] [X], visit [x];
Struct node // struct, which records the coordinates in the queue and the number of moved steps
{
Int X, Y, step;
};
Bool check (int x, int y) // check whether it is out of bounds
{
If (x
Return false;
Return true;
}
Void BFS (int x, int y)
{
Memset (use, false, sizeof (use ));
Node cur;
Cur. x = X;
Cur. Y = y;
Cur. Step = 0;
Queue
Q. Push (cur );
Use [x] [Y] = true;
Int C
, ). Suppose you have a function that brings two parameters, but you only use one of them:
Int somefunction (INT arg1, int arg2) {return arg1 + 5 ;}
When using/W4, the compiler complains:
"Warning c4100: ''arg2'': unreferenced formal parameter ."
To cheat the compiler, you can add unreferenced_parameter (arg2 ). Now the compiler will shut down when compiling your function that references arg2. And because of the statement:
Arg2;
In fact, the compiler will not generate any code for it
Format 1: Used in a single document window or manually created listctrl
Void ctrade_misview: onsize (uint ntype, int CX, int CY){Cview: onsize (ntype, CX, CY );// Todo: add your message handler code hereIf (m_listctrl) // m_listctrl is the Instance Object of listctrl.{Crect rect;Getclientrect (rect); // directly obtain the user area rectRect. Top + = 30; // here is the setting 30 pixels from the topM_listct
their code.The problem is that level 4 really pays too much attention to the details. on Level 4, the compiler will complain about anything that does not reference a parameter (unless you are really interested in using this parameter, ). Suppose you have a function that brings two parameters, but you only use one of them:
int SomeFunction(int arg1, int arg2){ return arg1+5;}
When using/W4, the compiler complains:
“warning C4100: ''arg2'' : unreferenced formal parameter.”
To cheat the compiler,
important parts abve are:1. The code at 77D55E9D. Which copies the address of the bmp file stringInto ecx.
2. The code at 77D55EA8. This checks if the hinst parameter passedLoadImage is NULL. If we jump to the code at address 77D57C6E becuase of thisLine:
77D55EB0 je _ LoadBmp @ 20 + 21 h (77D57C6Eh); If esi was NULL jumpsTo code at 77D57C6E
This takes us to this assembly:
77D57C6E mov esi, dword ptr [_ hmodUser (77da01_h)]77D57C74 movzx eax, cx77D57C77 xor ebx, ebx77D57C79 sub eax, 7 FDCh77D57
1. Connect to the database:
Cx = sqlite3.connect ('database. db'). cx is a database connection object and has the following operations:
Commit () -- transaction commit
Rollback () -- transaction rollback
Close () -- close a database connection
Cursor () -- create a cursor
2. Obtain the cursor object:
All SQL statements must be executed under the cursor object. cu = cx
Keep the form at the beginning
You can use the setwindowpos function to set the position and status of a window. In this example, you can use this function to place a form on all forms so that it is always at the beginning.
Let's take a look at the definition and parameters of the setwindowpos function:
Before using the API function, you must first
Program The statement is as follows:
Private declare function setwindowpos lib "USER32" (byval hwnd as long, byval hwndinsertafter
Transferred from: http://hi.baidu.com/max_new/blog/item/e2bbe607b1f127c57b8947c0.htmlMany software, especially the desktop area is not very large software, usually provides a regular top-of-the-box features (perhaps the software is not so called, but the role is the same), its role is to keep the window is always on top of other windows, you can eliminate the frequent switch window action.If you want to do this, there is an API that can be implemented: SetWindowPos, the declaration is this:Priva
1305-area of a parallelogramPDF (中文版) statisticsforumTime Limit:1 second (s) Memory limit:32 MBA parallelogram is a quadrilateral with the pairs of parallel sides. See the picture below:Fig:a ParallelogramNow is given the co ordinates of A, B and C, you have to find the coordinates of D and the area of the parallelogram. The orientation of ABCD should is same as in the picture.InputInput starts with an integer T (≤1000), denoting the number of test cases.Each case starts with a line containing s
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