It's implicitly a pointer, implemented as one internally, but the same way you're not allowed to change a string's contents, you're not allowed to change its value. Hardcoded.
Those... aren't really similar things. The array's address (the name) is only known at compile time, or debug info, but in the compiled code the 'name' is effaced and you're simply dealing with addresses hardcoded into the code.
Thus, there isn't really anything you can modify unless you were to write the code segment.
The string, I guess it could also be located in a code segment, but more likely is that they are actual data values in a read-only data segment.
As such, the array is not really a pointer, there is no variable anywhere holding its address. So, it's no different from not being able to change the address of some int value that you have defined.
When you do
That's technically no different from
But I find the biggest annoyance(?) of arrays and structs to be that you can only initialize them at declaration?
Oddities with gcc, 2.95.3 for the AMIGA and 4.2.1 for MY current OSX 10.14.1...
I am creating a basic calculator for the AMIGA ADE *NIX emulator in C as it does not have one.
Below are two very condensed snippets of which I have added the results inside the each code section.
IMPORTANT!... (11 Replies)
I am getting Segmentation fault at below function call in my script:
get_x() {
sqlplus -s / <<end | grep KEEP | sed 's/KEEP//;s///g'
select 'KEEP' ,table_name from all_synonyms where upper(synonym_name)= '$1';
exit
end
x=$(get_x $1)
echo " SQL OUTPUT IS :: $x"
}
I am getting output of... (1 Reply)
I use a binary name (ie polo) it gets some parameter , so for debugging normally i do this :
i wrote script for watchdog my app (polo) and check every second if it's not running then start it , the problem is , if my app , remain in state of segmentation fault for a while (ie 15 ... (6 Replies)
I am working on the application in which I have to fetch values from the database and paste in url and send it to portal.
table=get_result("SELECT serialno,cas,Mode,FLC,TLC,location,CompName,CompCode,FG,FC,DispNo,TruckNo,LWbill,RRGPN,INVNO,DCN,RQTY,DQTY,SQTY,DDATE,RDATE,SDATE,TTIME FROM... (1 Reply)
void disptree(node *ptr)
{
if ((ptr->left) !=NULL)
disptree(ptr->left);
cout<<"Position:"<<ptr->pos<<" Data:"<<ptr->data<<endl;
if ((ptr->right)!=NULL;
disptree(ptr->right);
}
i'm getting a segmentation fault at the red line. i cannot understand what's the problem.... (3 Replies)
Hi,
my code is written in proC and it is in UNIX(AIX).I have written a small code for writing data into a binary file,but while writing my program is giving core dump.
Here Is my code----
fpWriteFile = fopen(WriteFileName,"wb+");
CHAR *recvgen;
recvgen = (char... (7 Replies)
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)
If I do this.
Assume
struct life
{
char *nolife;
}
struct life **life;
// malloc initialization & everything
if(life->nolife == 0)
Would I get error at life->nolife if it is equal to 0.
wrong accession? (3 Replies)
Hello,
I'm trying to write a method which will return the extension of a file given the file's name, e.g. test.txt should return txt. I'm using C so am limited to char pointers and arrays. Here is the code as I have it:
char* getext(char *file)
{
char *extension;
int i, j;... (5 Replies)
I am tring to install Lotus Domino/Notes 5.0.5 on a AIX 4.3.3 server.
I go to run the cdrom/ibmpow/install and I get the following error.
Lotus Notes for Unix Install Program
---------------------------------------------
./install: 10088 Segmentation fault
This had Lotus Notes installed... (1 Reply)