Walmart Interview Question: Whatt is the Suggestions for ... | Glassdoor.co.uk

Interview Question

Computer Operator Interview Pittsburgh, PA (US)

Whatt is the Suggestions for C Programmers ?

Tags:
difficult
Answer

Interview Answer

2 Answers

0

[1] Macros are almost never necessary in C++. Use c o n s t (§5.4) or e n u m (§4.8) to define manifest
constants, i n l i n e (§7.1.1) to avoid functioncalling
overhead, t e m p l a t e s (Chapter 13) to
specify families of functions and types, and n a m e s p a c e s (§8.2) to avoid name clashes.
[2] Don’t declare a variable before you need it so that you can initialize it immediately. A
declaration can occur anywhere a statement can (§6.3.1), in forstatement
initializers
(§6.3.3), and in conditions (§6.3.2.1).
[3] Don’t use m a l l o c (). The n e w operator (§6.2.6) does the same job better, and instead of
r e a l l o c (), try a v e c t o r (§3.8).
[4] Try to avoid v o i d *, pointer arithmetic, unions, and casts, except deep within the implementation
of some function or class. In most cases, a cast is an indication of a design error. If
you must use an explicit type conversion, try using one of the ‘‘new casts’’ (§6.2.7) for a
more precise statement of what you are trying to do.
[5] Minimize the use of arrays and Cstyle
strings. The C++ standard library s t r i n g (§3.5) and
v e c t o r (§3.7.1) classes can often be used to simplify programming compared to traditional C
style. In general, try not to build yourself what has already been provided by the standard
library.

Interview Candidate on 17 Jun 2012

One or more comments have been removed.
Please see our Community Guidelines or Terms of Service for more information.

Add Answers or Comments

To comment on this, Sign In or Sign Up.