C Interview Questions
Questions Answers Views Company eMail

diff. between *p and **p

3 3976

can u suggest me am in a confusion to choose whether to go to c programming or a software testing . am a graduate in B.sc(electronics).

1 1424

what is ANSI and ISO

HCL,

7 3907




what are far pointers?

1 2664

how to swap 2 numbers in a single statement?

3 3103

how to swap 2 numbers within a single statement?

4 4554

i have a written test for microland please give me test pattern

Microland,

1430

what is the meaning of 'c' language

3 2927




#include void main() { int a [5]; for (i=0; i<=4; i++) printf(“%d” ,a[i]); }

8 4078

Write a program using bitwise operators to invert even bits of a given number.

2 6562

Write a program to find whether the given number is prime or not?

6 7548

Write a program to print the prime numbers from 1 to 100?

7 30310

In C program, at end of the program we will give as "return 0" and "return 1", what they indicate? Is it mandatory to specify them?

5 3283

how to TOGGLE Nth bit of variable in a MACRO

NDS,

1 6773

write a c program to find the square of a 5 digit number and print the result.

Sasken, Accenture, Vimukti Technologies,

5 14224


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Un-Answered Questions { C }

how to create duplicate link list using C???

1276


what are bit fields? What is the use of bit fields in a structure declaration?

770


c language interview questions & answer

726


FILE PROGRAMMING

1024


write a c program to do the following: a) To find the area of a triangle. b) To convert the temperature from Fahrenheit to Celsius. c) To convert the time in hours : minutes : seconds to seconds.

803






1.int a=10; 2.int b=20; 3. //write here 4.b=30; Write code at line 3 so that when the value of b is changed variable a should automatically change with same value as b. 5.

887


a) Identify the following declarations. Ex. int i (integer variable) float a[l0](array of 10 real nos) int (*f())() void *f int (*f()) [] void *f int f[] [] [] char *(*f) () int (*f[]) [] float(*f) [] [] float **f int ******f

842


Create a registration form application by taking the details like username, address, phone number, email with password and confirm password (should be same as password).Ensure that the password is of 8 characters with only numbers and alphabets. Take such details for 3 users and display the details. While taking input password must appear as “****”.

905


I need help with the following lab. Can anyone explain it to me on how to approach this problem. Coding would be great too !!! No busy waiting allowed. Remember that Java monitors are 'signal and continue'. The input data is called the database (DB). In this problem, it consists of a single variable initialized in the main thread, to contain the current time of day in HH:MM:SS:mmm format (mmm is milliseconds) truncated to 3 digits. Threads follow these rules: 1. Readers may all attempt to read at the same time, but NOT if a writer is writing (i.e.; the writer is in the monitor. 2. Writing is exclusive (only 1 writer at a time, no readers while writing). 3. Options: (to be specified by instructor) a. Readers have absolute priority over writers. b. Writers have absolute priority over readers c. When a reader arrives and a writer is waiting, the reader is suspended behind the writer instead of being admitted immediately. Thus, a writer waits for readers that were running when it arrived, but does not to wait for new readers. You may program this in C++ or Java. There are 4 controlling input values: 1. r – number of readers 2. w – number of writers 3. R – delay for a reader to restart 4. W – delay for a writer to restart Create the following program consisting of 1 main process (your main program) with n threads: 1. The main thread: a. Creates the 'n' threads needed. Of these, r of them are readers and w of them are writers. Starts all readers and writers. b. Waits for all 'n' threads to complete. You may use any method to detect when they are all complete. c. Prints out the resulting outputs from the threads. 2. Threads: a. When a thread starts to run, it immediately tries to enter the monitor. b. A reader thread reads the DB, outputs the exact message below, then exits: >>> DB value read =: HH:MM:SS:mmm by reader number: rr where the underlined text is replaced with actual data. c. A writer thread updates the DB with a new value (from the system time), outputs the exact message below, then exits: *** DB value set to: HH:MM:SS:mmm by writer number: ww where the underlined text is replaced with actual data. d. Each thread accesses the data a total of 10 times, exiting, then re-entering the monitor after each access. Hints: 1. File access *might* not be thread-safe, so you should be prepared to handle this. Read the documentation for the language you are using. 2. Suggested values for delays are: a. If looping, R >=1,000,000 and W>=100,000 b. If using “sleep”, then R=100 ms, W=50 ms. Additional: • Thread output is to ONE file used by ALL threads (so you need to synchronize access to it). • Readers must provide sufficient delay that results are useful (delay by R before re-trying). R is another input value. • Writers must also delay. Delay by W, updating the DB each time. W is an input. • Test your program with AT LEAST TWO different sets of values for r and w (#s of readers and writers) plus this set: r = 4, w=2. Basic operation of a thread: attempt to enter the monitor. If unsuccessful, you get put on a queue. When you get in, read or write the data (depending on type of thread), exit the monitor, wait the required delay amount, then try again. Repeat 10 times.

744


what are the facialities provided by you after the selection of the student.

966


A program is required to print your biographic information including: Names, gender, student Number, Cell Number, line of study and your residential address.

549


hi friends how r u as soon in satyam my interview is start but i m very confusued ta wat i do plz help me frndz wat can i do plz tell me some question and answers related with "C" which r asked in the interview .

1082


why we wont use '&' sing in aceesing the string using scanf

1040


diff between exptected result and requirement?

851


how logic is used

753