returning strings

[MC felon]

how do we return strings or arrays from a function? i tried..

char[] some_func() //where i thought char[] would tell the compiler
that the return is a string
{

char str[100];
//something;
return str;
}
thanks in advance!

[Geo]

MC felon wrote:

how do we return strings or arrays from a function? i tried..

char[] some_func() //where i thought char[] would tell the compiler
that the return is a string
{

char str[100];
//something;
return str;
}
thanks in advance!

You're writting C++ not C, do it like this

std::string some_func()
{
std::string str;
// something;
return str;
}

[MC felon]

i work on TC++ (some old version). Please suggest something that works
in the same.

[Gianni Mariani]

MC felon wrote:

how do we return strings or arrays from a function? i tried..

char[] some_func() //where i thought char[] would tell the compiler
that the return is a string
{

char str[100];
//something;
return str;
}

That won't work too well since by the time the function returns the
value being returned is dead.

Did you read the FAQ?

[MC felon]

how does the function 'gets()' return the string?

[Rolf Magnus]

MC felon wrote:

>
how does the function 'gets()' return the string?

It doesn't. You give it the memory, and the function fills it.

[Gavin Deane]

Rolf Magnus wrote:

MC felon wrote:

how does the function 'gets()' return the string?

It doesn't. You give it the memory, and the function fills it.

You give it the memory, and the function fills it, and the function
merrily continues filling memory past the end of the chunk you gave it
until the input is used up, and, unless your program has ABSOLUTE
control over the length of the input[*], there is absolutely nothing
you can do to prevent this risk.

To the OP: Don't use gets. If you are going to use C funcitons for
string input, use fgets.
[*] prompting the user to only type a certain number of characters is
by no means absolute control.

Gavin Deane

[Gavin Deane]

MC felon wrote:

i work on TC++ (some old version). Please suggest something that works
in the same.

Please quote enough of the message you are replying to to provide
context. On its own, your message is meaningless. To do that from
Google Groups, don't use the broken Reply link at the bottom of the
message. Instead, click the Show Options link at the top and use the
Reply link revealed there. Thanks.

To answer your question, did you #include<string >, the standard header
that defines the C++ string class (and puts it in namespace std)?

As to your compiler, if you can't get this

#include <string>
std::string some_func()
{
std::string str;
// something;
return str;
}

to compile, you haven't got a hope of learning or writing C++ with that
compiler. Fortunately, there are sevral up-to-date and free C++
compilers available for you to upgrade to. If you're on Windows,
Microsoft's VC++8 compiler is free for example, and there are other
options. If you're on a different platform there will, I am sure, be
other options too.

Gavin Deane

[Geo]

MC felon wrote:

i work on TC++ (some old version). Please suggest something that works
in the same.

Since I don't know what TC++ is, I don't know what works,. but if it
doesn't support the STL it isn't really C++ as I know it.

If you don't know how to work with C style strings, I suggest you read
a book, it's far to complicated to describe here.

[MC felon]

ok. thanks for the tip.
here's what i want the function to do.

allow the user to input a string. stop receiving input when user
presses tab.

its like gets, only that the input gets stopped when '\t' is pressed
and not '\r'.

how do i do this?