why we never delete a pointer twice Post: 302131614

10 More Discussions You Might Find Interesting

1. Programming

Will we get SEGV if we try to �delete []� un-initialized integer pointer variable.

I have a class with an integer pointer, which I have not initialized to NULL in the constructor. For example: class myclass { private: char * name; int *site; } myclass:: myclass(....) : name(NULL) { ..... } other member function �delete � the variable before...

2. Programming

pointer

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...

3. Programming

Regarding char Pointer

Hi, char *s="yamaha"; cout<<s<<endl; int *p; int i=10; p=&i; cout<<p<<endl; 1) For the 1st "cout" we will get "yamaha" as output. That is we are getting "content of the address" for cout<<s. 2) But for integer "cout<<p" we are getting the "address only". Please clarify how we are...

4. Programming

address of pointer

Hi i'm new to c programming and i'm trying to change the address of a pointer/variable but i can't seem to get it right, I have this char heap; char *firstFree = heap; char *allocMem( int size ) { void *malloc(size_t sizeofint); /*allocate space for an array with size...

5. Programming

far pointer

what is far pointer in C

6. Programming

pass a pointer-to-pointer, or return a pointer?

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)...

7. Programming

matrix pointer

Can anyone tell me what the following statements do? float (*tab); tab=(float (*)) calloc(MAXCLASS, (MAXCLASS+1)*sizeof(float));

8. Programming

C dynamic pointer

Hi, Can anyone tell me how i can declare and allocate dynamically an array of pointers to structured type?? Is declaration something like this:? struct_name ** array;

9. Programming

pointer conversion in c

hi there fellos could someone teach me how to convert a character pointer into an integer using c much love

10. Programming

Pointer for 2D array seems to be 3D in C

I am struggling with the pointer to 2D-array (cf: 2D array of pointers). Can anybody help me elaborate how the pointer x moves in the memory to access the individual of y, especially the high lighted lines? I have talked to one of the curators of the forum, but I am still not quite clear. Here...

LEARN ABOUT REDHAT

delete

delete(n)							    [incr Tcl]								 delete(n)

NAME

       delete - delete things in the interpreter

SYNOPSIS

       delete option ?arg arg ...?

DESCRIPTION

       The  delete command is used to delete things in the interpreter.  It is implemented as an ensemble, so extensions can add their own options
       and extend the behavior of this command.  By default, the delete command handles the destruction of namespaces.

       The option argument determines what action is carried out by the command.  The legal options (which may be abbreviated) are:

       delete class name ?name...?
	      Deletes one or more [incr Tcl] classes called name.  This deletes all objects in the class, and all derived classes as well.

	      If an error is encountered while destructing an object, it will prevent the destruction of the class and any remaining objects.	To
	      destroy the entire class without regard for errors, use the "delete namespace" command.

       delete object name ?name...?
	      Deletes  one  or	more  [incr Tcl] objects called name.  An object is deleted by invoking all destructors in its class hierarchy, in
	      order from most- to least-specific.  If all destructors are successful, data associated with the object is deleted and the  name	is
	      removed as a command from the interpreter.

	      If  the access command for an object resides in another namespace, then its qualified name can be used: delete object foo::bar::x If
	      an error is encountered while destructing an object, the delete command is aborted and the object  remains  alive.   To  destroy	an
	      object without regard for errors, use the "rename" command to destroy the object access command.

       delete namespace name ?name...?
	      Deletes  one or more namespaces called name.  This deletes all commands and variables in the namespace, and deletes all child names-
	      paces as well.  When a namespace is deleted, it is automatically removed from the import lists of all other namespaces.

KEYWORDS

       namespace, proc, variable, ensemble

itcl									3.0								 delete(n)