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

C Interview Questions

Questions Answers Views Company eMail

How to develop software using "c" programming?

IBM, TCS,

1 10158

regarding pointers concept

2036

what will be the out put. #include void main() { printf("Output:"); printf(1+"vikashpatel"); }//output: ikashpatel

V2 Solutions,

1 4613

write an algorithm and c program to add two 2x2 matrics

2 15513

in one file global variable int i; is declared as static. In another file it is extern int i=100; Is this valid ?

NetApp,

2 6543

if function is declared as static in one source file, if I would like to use the same function in some other source file...is it possible....how ?

NetApp,

2 10888

Q. where is the below variables stored ? - volatile, static, register

Bosch,

3 13898

Is the below things valid & where it will be stored in memory layout ? static const volatile int i; register struct { } ; static register;

Bosch,

2 5394

write a program to find the frequency of a number

Infosys,

4 25080

whats the use of header file in c?

2 5400

write a c program for print your name .but,your name may be small letter mean print a capital letter or your name may be capital letter mean print a small letter .example \\enter ur name : sankar The name is: SANKAR (or) enter your name:SAnkar The name is:saNKAR

5 14981

Draw a diagram showing how the operating system relates to users, application programs, and the computer hardware ?

2579

discuss the steps needed to get a program from source code to executable in a system?

1 4814

Why Modern OS are interrupt driven?Give an example

3 26421

Taking an example,differentiate b/w loader and linker ?

1 5382

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Un-Answered Questions { C }

What is the heap?

1216

Write a program to maintain student’s record. Record should not be available to any unauthorized user. There are three (3) categories of users. Each user has its own type. It depends upon user’s type that which kind of operations user can perform. Their types and options are mentioned below: 1. Admin (Search Record [by Reg. No or Name], View All Records, Insert New Record, Modify Existing Record) 2. Super Admin (Search Record [by Reg. No or Name], View All Records, Insert New Record, Modify Existing Record, Delete Single Record) 3. Guest (Search Record [by Reg. No or Name], View All Records) When first time program runs, it asks to create accounts. Each user type has only 1 account (which means that there can be maximum 3 accounts). In account creation, following options are required: Login Name: <6-10 alphabets long, should be unique> Password: <6-10 alphabets long, should not display characters when user type> Confirm Password: Account Type: Login Name, Password and Account Type should be stored in a separate file in encrypted form. (Encryption means that actual information should be changed and Decryption means that Encrypted information is changed back to the actual information) If any of the above mentioned requirement(s) does not meet then point out mistake and ask user to specify information again. When Program is launched with already created accounts, it will ask for user name and password to authenticate. On successful authentication, give options according to the user’s type.

1983

Explain null pointer.

1114

What do you mean by a local block?

1085

How can I change the size of the dynamically allocated array?

1149

What are the applications of c language?

1078

An expression to whose value an operater is applied a) operand b) variable c) constant d) all of the above

1164

please send me the code for multiplying sparse matrix using c

2173

Write a c program to build a heap method using Pointer to function and pointer to structure ?

4688

What do you mean by Recursion Function?

1122

Why is c called a mid-level programming language?

1200

What is a null string in c?

1036

how to count no of words,characters,lines in a paragraph.

4423

Explain what is the best way to comment out a section of code that contains comments?

1134

Are pointers integer?

1011

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