convert char array to string

[jc150]

Hi,

Trying to get this code to work, but keep getting junk for the ouput.

  const char * larray;  
 larray="this is  a test";     
 string strlist = larray;     
 printf("%s\n",strlist); 

Tried doing this way based on some examples I found, but does not work.

would appreciate any help.

Thanks

[mutexe]

http://stackoverflow.com/questions/10865957/c-printf-with-stdstring

[nvrmnd]

no, that just won't work, because

1st) you declared larray as const char*, and yet you assigned a value to it

if you want to assign a c - string to std::string, use the string member function assign:

strlist.assign( larray );
http://www.cplusplus.com/reference/string/string/assign/

EDIT
For the people who came up to this post and have read this reply,, please just forget it,, it is a complete mess... :///

[tath]

or use string constructor:

	const char* aa = "asdad";

	string str(aa);

[MikeyBoy]

1st) you declared larray as const char*, and yet you assigned a value to it

That's fine. const char * larray; doesn't declare a const pointer. It declares a pointer to const char.

So: the address to which the pointer points can be changed, but the values at that memory location cannot be changed.

larray="this is a test";

is fine, because it's changing the address to which the pointer points.

[coder777]

nevermore28 wrote:

1st) you declared larray as const char*, and yet you assigned a value to it

That's not a problem.

nevermore28 wrote:

if you want to assign a c - string to std::string, use the string member function assign:

No need to do that

The problem is that you provide a std::string to printf while expects a c-string:

printf("%s\n",strlist.c_str());

solves the problem.

[nvrmnd]

@MikeyBoy and @coder777 ->
oh i see, i didn't figure that out ( i'm just a begginer too ) ,by the way ... thanks to the two of you for the right info

[MikeyBoy]

You're welcome :)

The difference between

// pointer is non-const, but the char being pointed to is const.
const char* larray;

and

// pointer is const, but the char being pointed to is non-const
char* const larray;

is a subtle one, but worth taking the time to understand.

[jc150]

@coder777, Mikeyboy, and Tath -->

the string str(aa); // worked fine and using cout instead of printf also corrected some output problems I had. Thank you!!