Achive Summary

Top Java & J2E interview FAQ, Top C, C++ & .net interview FAQ, Cricket World Cup Schedule, Recent Job Openning In various Firms, Infosys pattern changed, Top 50 Interview puzzles, Non - Technical Interview FAQ's, Infy Prepration -1, HR FAQ Achives, Brief of Petronas Towers , SAP - Boom, Akshardham - New Delhi, IT Ebooks, Top Virus On Globe, Latest CPU's nd Motherboards,World's 100 Richest People, Top 10 Richest in INDIA, Santa's JOKES,Perl FAQ's and Many More !!!

Sunday, March 4, 2007

Top 100 C Questions Asked in Actual Interviews

  • Difference between arrays and pointers?
    http://www.coolinte rview.com/ interview/ 960

  • What is the purpose of realloc( )?
    http://www.coolinte rview.com/ interview/ 961

  • What is static memory allocation and dynamic memory allocation?
    http://www.coolinte rview.com/ interview/ 962

  • How are pointer variables initialized?
    http://www.coolinte rview.com/ interview/ 963

  • Are pointers integers?
    http://www.coolinte rview.com/ interview/ 964

  • What is a pointer variable?
    http://www.coolinte rview.com/ interview/ 965

  • What is a pointer value and address?
    http://www.coolinte rview.com/ interview/ 966

  • What is a method?
    http://www.coolinte rview.com/ interview/ 967

  • What are the advantages of the functions?
    http://www.coolinte rview.com/ interview/ 968

  • What is the purpose of main( ) function?
    http://www.coolinte rview.com/ interview/ 969

  • What is an argument ? differentiate between formal arguments and actual arguments?
    http://www.coolinte rview.com/ interview/ 970

  • What is a function and built-in function?
    http://www.coolinte rview.com/ interview/ 971

  • What is modular programming?
    http://www.coolinte rview.com/ interview/ 972

  • When does the compiler not implicitly generate the address of the first element of an array?
    http://www.coolinte rview.com/ interview/ 973

  • What are the characteristics of arrays in C?
    http://www.coolinte rview.com/ interview/ 974

  • Differentiate between a linker and linkage?
    http://www.coolinte rview.com/ interview/ 975

  • What are advantages and disadvantages of external storage class?
    http://www.coolinte rview.com/ interview/ 976

  • Diffenentiate between an internal static and external static variable?
    http://www.coolinte rview.com/ interview/ 977

  • What are the advantages of auto variables?
    http://www.coolinte rview.com/ interview/ 978

  • What is storage class and what are storage variable ?
    http://www.coolinte rview.com/ interview/ 979

  • Which expression always return true? Which always return false?
    http://www.coolinte rview.com/ interview/ 980

  • Write the equivalent expression for x%8?
    http://www.coolinte rview.com/ interview/ 981

  • why n++ executes faster than n+1?
    http://www.coolinte rview.com/ interview/ 982

  • what is a modulus operator? What are the restrictions of a modulus operator?
    http://www.coolinte rview.com/ interview/ 983

  • What is the difference between a string and an array?
    http://www.coolinte rview.com/ interview/ 984

  • Is it better to use a pointer to navigate an array of values,or is it better to use a subscripted array name?
    http://www.coolinte rview.com/ interview/ 985

  • Can the sizeof operator be used to tell the size of an array passed to a function?
    http://www.coolinte rview.com/ interview/ 986

  • Is using exit() the same as using return?
    http://www.coolinte rview.com/ interview/ 987

  • Is it possible to execute code even after the program exits the main() function?
    http://www.coolinte rview.com/ interview/ 988

  • What is a static function?
    http://www.coolinte rview.com/ interview/ 989

  • Why should I prototype a function?
    http://www.coolinte rview.com/ interview/ 990

  • How do you print an address?
    http://www.coolinte rview.com/ interview/ 991

  • Can math operations be performed on a void pointer?
    http://www.coolinte rview.com/ interview/ 992

  • How can you determine the size of an allocated portion of memory?
    http://www.coolinte rview.com/ interview/ 993

  • What is a �null pointer assignment� error? What are bus errors, memory faults, and core dumps?
    http://www.coolinte rview.com/ interview/ 994

  • What is the difference between NULL and NUL?
    http://www.coolinte rview.com/ interview/ 995

  • What is the heap?
    http://www.coolinte rview.com/ interview/ 996

  • Can the size of an array be declared at runtime?
    http://www.coolinte rview.com/ interview/ 997

  • What is the stack?
    http://www.coolinte rview.com/ interview/ 998

  • When should a far pointer be used?
    http://www.coolinte rview.com/ interview/ 999

  • What is the difference between far and near?
    http://www.coolinte rview.com/ interview/ 1000

  • Is it better to use malloc() or calloc()?
    http://www.coolinte rview.com/ interview/ 1001

  • Why should we assign NULL to the elements (pointer) after freeing them?
    http://www.coolinte rview.com/ interview/ 1002

  • When would you use a pointer to a function?
    http://www.coolinte rview.com/ interview/ 1003

  • How do you use a pointer to a function?
    http://www.coolinte rview.com/ interview/ 1004

  • Can you add pointers together? Why would you?
    http://www.coolinte rview.com/ interview/ 1005

  • What does it mean when a pointer is used in an if statement?
    http://www.coolinte rview.com/ interview/ 1006

  • Is NULL always defined as 0?
    http://www.coolinte rview.com/ interview/ 1007

  • What is a void pointer?
    http://www.coolinte rview.com/ interview/ 1008

  • What is a null pointer?
    http://www.coolinte rview.com/ interview/ 1009

  • How many levels of pointers can you have?
    http://www.coolinte rview.com/ interview/ 1010

  • What is indirection?
    http://www.coolinte rview.com/ interview/ 1011

  • How do you print only part of a string?
    http://www.coolinte rview.com/ interview/ 1012

  • How can I convert a string to a number?
    http://www.coolinte rview.com/ interview/ 1013

  • How can I convert a number to a string?
    http://www.coolinte rview.com/ interview/ 1014

  • What is the difference between a string copy (strcpy) and a memory copy (memcpy)? When should each be used?
    http://www.coolinte rview.com/ interview/ 1015

  • How can you check to see whether a symbol is defined?
    http://www.coolinte rview.com/ interview/ 1016

  • How do you override a defined macro?
    http://www.coolinte rview.com/ interview/ 1017

  • What is #line used for?
    http://www.coolinte rview.com/ interview/ 1018

  • What is a pragma?
    http://www.coolinte rview.com/ interview/ 1019

  • What are the standard predefined macros?
    http://www.coolinte rview.com/ interview/ 1020

  • How can type-insensitive macros be created?
    http://www.coolinte rview.com/ interview/ 1021

  • How many levels deep can include files be nested?
    http://www.coolinte rview.com/ interview/ 1022

  • Can include files be nested?
    http://www.coolinte rview.com/ interview/ 1023

  • Can you define which header file to include at compile time?
    http://www.coolinte rview.com/ interview/ 1024

  • What is the difference between #include and #include �file�?
    http://www.coolinte rview.com/ interview/ 1025

  • Is it better to use a macro or a function?
    http://www.coolinte rview.com/ interview/ 1026

  • How are portions of a program disabled in demo versions?
    http://www.coolinte rview.com/ interview/ 1027

  • What is the benefit of using an enum rather than a #define constant?
    http://www.coolinte rview.com/ interview/ 1028

  • What is the benefit of using #define to declare a constant?
    http://www.coolinte rview.com/ interview/ 1029

  • Can a file other than a .h file be included with #include?
    http://www.coolinte rview.com/ interview/ 1030

  • How can you avoid including a header more than once?
    http://www.coolinte rview.com/ interview/ 1031

  • What will the preprocessor do for a program?
    http://www.coolinte rview.com/ interview/ 1032

  • What is a macro, and how do you use it?
    http://www.coolinte rview.com/ interview/ 1033

  • What is Preprocessor?
    http://www.coolinte rview.com/ interview/ 1034

  • How can I make sure that my program is the only one accessing a file?
    http://www.coolinte rview.com/ interview/ 1035

  • How can I open a file so that other programs can update it at the same time?
    http://www.coolinte rview.com/ interview/ 1036

  • How do you determine whether to use a stream function or a low-level function?
    http://www.coolinte rview.com/ interview/ 1037

  • What is the difference between text and binary modes?
    http://www.coolinte rview.com/ interview/ 1038

  • How can you restore a redirected standard stream?
    http://www.coolinte rview.com/ interview/ 1039

  • How do you redirect a standard stream?
    http://www.coolinte rview.com/ interview/ 1040

  • How can I search for data in a linked list?
    http://www.coolinte rview.com/ interview/ 1041

  • How can I sort a linked list?
    http://www.coolinte rview.com/ interview/ 1042

  • What is hashing?
    http://www.coolinte rview.com/ interview/ 1043

  • What is the quickest searching method to use?
    http://www.coolinte rview.com/ interview/ 1044

  • What is the easiest searching method to use?
    http://www.coolinte rview.com/ interview/ 1045

  • How can I sort things that are too large to bring into memory?
    http://www.coolinte rview.com/ interview/ 1046

  • What is the quickest sorting method to use?
    http://www.coolinte rview.com/ interview/ 1047

  • What is the easiest sorting method to use?
    http://www.coolinte rview.com/ interview/ 1048

  • What is the benefit of using const for declaring constants?
    http://www.coolinte rview.com/ interview/ 1049

  • Can static variables be declared in a header file?
    http://www.coolinte rview.com/ interview/ 1050

  • What is the difference between declaring a variable and defining a variable?
    http://www.coolinte rview.com/ interview/ 1051

  • Is it acceptable to declare/define a variable in a C header?
    http://www.coolinte rview.com/ interview/ 1052

  • When should a type cast not be used?
    http://www.coolinte rview.com/ interview/ 1053

  • When should a type cast be used?
    http://www.coolinte rview.com/ interview/ 1054

  • How can you determine the maximum value that a numeric variable can hold?
    http://www.coolinte rview.com/ interview/ 1055

  • How reliable are floating-point comparisons?
    http://www.coolinte rview.com/ interview/ 1056

  • Can a variable be both const and volatile?
    http://www.coolinte rview.com/ interview/ 1057

  • when should the volatile modifier be used?
    http://www.coolinte rview.com/ interview/ 1058

  • When should the register modifier be used? Does it really help? http://www.coolinte rview.com/ interview/ 1059
    •
    Posted by at

    No comments:

    Post a Comment

    Subscribe to: Post Comments (Atom)