Returning a string...

It is possible to return a String from a function?
If yes, how?

I'am trying to return a full string from this function:

Code:

---

char substr(char *str, int start, int end)
{
    int i,j;
    char strCp[100];
 
    for(i = start, j = 0; i <= end; i++,j++)
        strCp[j] = str[i];
   
    strCp[j] = '\0';
   
    return *strCp;
}

---

But this dont work... he just returns 1 char, not all the string.

To return a string, make the return type char *. But in this case it won't work because your string is local, when the function returns it goes away so a pointer to it is invalid.

-Prelude

Hmm, just assigning to an global variable the value of my local variable? or this isnt good too?

You could strcpy() your local string to a global one if you wanted, in which case you wouldn't have to return it. However, use of global variables should be kept to a minimum.

It is better to pass the function a pointer to a pre-allocated buffer, along with the size of the buffer. The function can then write data directly to it.

Thanks for the help :)