cin hex input problem.

[Trent Shipley]

int intThis;

cin >> intThis;

__end__
--------------------

This reads a decimal number in no matter what.

--------------------

cin >> /* oct | dec | hex */ >> intThis;

10 is output as 10, 012, 0xA

010 is output as 8, 010, 0x8

0x10 is output as 0, 00, 0x0

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If I play with the base manipulator and just enter 10

.. oct ..

Outputs 8 010 0x8

In short, a g++ compiled program is perfectly happy to cin numerals and
treat them as a string of any base.  However, it seems to be completely
oblivious to the 0.. and 0x prefixes.  I haven't tried the [A-Fa-f] hex
numbers, but I bet it cant treat them as parts of a number either.

------------------------------

Is there a flag or parameter that I need to set to get C++ to automatically
read in octal and hex integers?

I can always write code to scan and manipulate the input appropriately.

However, there are two reasons to avoid this:

A)  It is for a class, so if the behavior is a C++ built in, I need to get
it to work.

B)  As an aspiring programmer I embrace laziness as a virtue.




--------------------------

Trent Shipley

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