Transfer data to a pointer of a struct.

Dev Shed Forums Sponsor:

February 24th, 2013, 04:51 AM

ilans11il

Registered User

Join Date: Feb 2013

Posts: 7

Time spent in forums: 1 h 7 m 3 sec
Reputation Power: 0

Transfer data to a pointer of a struct.

Hi
could you please help,
I get this error while trying to transfer data to a pointer of a struct.

Error:
incompatible types when assigning to type ‘char[20]’ from type ‘char

the struct:

Code:

typedef struct PhoneBook
{
	char Name[20];
	char Suraname[20];
	char PhoneNumber[20];
}phone;

the code:

Code:

void AddEntry(phone *phonebook_ptr)
{

	char A[20];
	printf("Enter name:\n");
	scanf("%s",A);
	phonebook_ptr->Name=A;


}

February 24th, 2013, 04:54 AM

salem

Contributed User

Join Date: Jun 2005

Posts: 3,839

Folding Points: 153 Folding Title: Novice Folder

Time spent in forums: 2 Months 3 Weeks 2 Days 18 h 45 m 47 sec
Reputation Power: 1774

You need to use strcpy()

__________________
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper

February 24th, 2013, 12:20 PM

dwise1_aol

Contributing User

Dev Shed God 2nd Plane (6000 - 6499 posts)

Join Date: Jan 2003

Location: USA

Posts: 6,134

Time spent in forums: 2 Months 2 Weeks 3 Days 20 h 49 m 9 sec
Reputation Power: 1974

More specifically, you are not copying the string A into your struct with that assignment statement, but rather you are attempting a damned illegal thing: assigning a pointer value to an array name. That is why you got that error message.

Now, if you had declared Name to be a char pointer, you would not have gotten that error message, but you would still have made an enormous mistake. Because in that case, you would have assigned a char pointer, the address of A, to that char pointer in that struct and when A goes away when you leave that function then your struct will be pointing to garbage. And even if you made A a global or a static, then every time you called that function to enter a different name into a different struct, all structs' Name fields would immediately change to the new name input.

Instead, you need to copy the contents of A into Name. You need to use strcpy().

Viewing: Dev Shed Forums > Programming Languages > C Programming > Transfer data to a pointer of a struct.

« Previous Thread | Next Thread »

Developer Shed Advertisers and Affiliates

Thread Tools	Search this Thread
Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts vB code is On Smilies are On [IMG] code is On HTML code is Off

View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox

Forum Jump