Re: Working on long String in C++

From:

"Victor Bazarov" <v.Abazarov@comAcast.net>

Newsgroups:

comp.lang.c++

Date:

Mon, 28 Jan 2008 14:17:24 -0500

Message-ID:

<fnl9o4$jhb$1@news.datemas.de>

manishsharma1@gmail.com wrote:

I have one long String like this:

015EnvironmentData1........

I want to read first three character from it and convert them to
integer. This will be the length of the Name of the field and then
there is value. So if we take above example

015 means 15 - So we are going to read next 15 Character Starting with
E of "EnvironmentData" till "a".
Transfer it to come Variable say Field

Then I have to read the Value of this field which is followed by this
15 character long Field in the STring that is 1 in the above case.

I need help in Stripping of the String so that I can get all the
Fields and their values.

This has to be in C++. I am new at it. Please help.

Something like

    std::string const blah("015EnvironmentData1........");
    int n = -1;
    std::ostringstream os(blah.substr(0, 3));
    os >> n;
    std::string Field = blah.substr(3, n);
    os.str() = blah.substr(3 + n, 1);
    int Value = -1;
    os >> Value;

This is untested and only intended to give an idea.

V
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