Technical Interview Questions and Answers Part I
1. What is your strongest programming language (Java, ASP, C, C++, VB, HTML, C#, etc.)?
Point to remember:
Before interview You should decide your Favorite programming language and be
prepared based on that question.
2.Differences between C and Java?
1.JAVA is Object-Oriented while C is procedural.
2.Java is an Interpreted language while C is a compiled
language.
3.C is a low-level language while JAVA is a high-level
language.
4.C uses the top-down approach while JAVA uses the bottom-up
approach.
5.Pointer go backstage in JAVA while C requires explicit
handling of pointers.
6.The Behind-the-scenes Memory Management with JAVA & The
User-Based Memory Management in C.
7.JAVA supports Method Overloading while C does not support
overloading at all.
8.Unlike C, JAVA does not support Preprocessors, & does
not really them.
9.The standard Input & Output Functions--C uses the
printf & scanf functions as its standard input & output while JAVA uses
the System.out.print & System.in.read functions.
10.Exception Handling in JAVA And the errors & crashes in
C.
3.In header files whether functions are declared or defined?
Functions are declared within header file. That is function
prototypes exist in a header file,not function bodies. They are defined in
library (lib).
4.What are the different storage classes in C ?
here are four types of storage classes in C. They are extern,
register, auto and static
5.What does static variable mean?
Static is an access qualifier. If a variable is declared as
static inside a function, the scope is limited to the function,but it will
exists for the life time of the program. Values will be persisted between
successive
calls to a function
6.How do you print an address ?
Use %p in printf to print the address.
7.What are macros? what are its advantages and
disadvantages?
Macros are processor directive which will be replaced at
compile time.
The disadvantage with macros is that they just replace the code they are not
function calls. similarly the advantage is they can reduce time for replacing
the same values.
8.Difference between pass by reference and pass by value?
Pass by value just passes the value from caller to calling function so the
called function cannot modify the values in caller function. But Pass by
reference will pass the address to the caller function instead of value if
called function requires to modify any value it can directly modify.
9.What is an object?
Object is a software bundle of variables and related methods.
Objects have state and behavior
10.What is a class?