istringstream and redefining the stream inside a for loop

[rolan]

I'm trying to figure out how to convert an array of type "string" into integers, and I have begun using istringstream.

I made a program to test how istringstream works, and I've been having trouble updating the characters in the stream within a for loop.

Here's a code snippet:

 
    string some_string="15372";
    int a;
    istringstream buffer(some_string);
    for (int n=0;n<5;n++){
        cout<<n<<endl;
        some_string=some_string+"923";
        buffer.str(some_string);
        buffer>>a;
        cout<<a<<endl<<some_string<<endl;
        } 

some_string keeps getting larger, however the buffer variable remains the same

instead of changing as some_string does.

Essentially, I'm looking for a way to update buffer after some_string changes.

[RRick]

I had a similar problem where I couldn't change the contents of an istringstream. For gnu C++, I found the following will reset the contents of istringstream to a new value.

istringstream iss( "stuff');
iss.clear();  iss.set( "replace with this");
.....

[rolan]

unfortunately, I'm unable to use that compiler, my prof wants to be able to compile it on his machine to test it using the Dev-C++ IDE and compiler.