C Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

C Interview Questions

Questions Answers Views Company eMail

Are the outer parentheses in return statements really optional?

1049

Are pointers really faster than arrays?

964

How do I swap bytes?

1022

How can I get random integers in a certain range?

1015

How can I determine whether a machines byte order is big-endian or little-endian?

1002

Can I initialize unions?

986

How can this be legal c?

1043

How can I call system when parameters (filenames, etc.) Of the executed command arent known until run time?

1030

What should malloc(0) do?

1057

What is the right type to use for boolean values in c?

989

How can I delete a file?

1015

I came across some code that puts a (void) cast before each call to printf. Why?

1154

What should malloc(0) do? Return a null pointer or a pointer to 0 bytes?

1021

Array is an lvalue or not?

1066

What is the difference between memcpy and memmove?

968

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Un-Answered Questions { C }

Why header file is used in c?

1023

What is huge pointer in c?

1022

Difference between goto, long jmp() and setjmp()?

1123

Explain the difference between call by value and call by reference in c language?

1052

Write an efficient algo and C code to shuffle a pack of cards.. this one was a feedback process until we came up with one with no extra storage.

1015

When should I declare a function?

1055

How does #define work?

1011

What is return type in c?

1074

a way in which a pointer stores the address of a pointer which stores the value of the target value a) reference b) allocation c) multiple indirection d) none

1089

What are the applications of c language?

1011

What is function pointer c?

1031

Why isnt there a numbered, multi-level break statement to break out

994

design and implement a data structure and performs the following operation with the help of file (included 1000 student marks in 5 sub. and %also) 1.how many students are fail in all 5 subjects (if >35) 2. delete all student data those are fail in all 5 subjects. 3. update the grace marks (5 no. if exam paper is 100 marks) 4. arrange the student data in ascending order basis of marks. 5.insert double of deleted students with marks in the list.

1922

What is a lvalue

1039

What is a c token and types of c tokens?

1011

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