C Interview Questions
Questions Answers Views Company eMail

write a program to print the all 4digits numbers & whose squares must me even numbers?

Virtusa,

2 5548

What is the main differences between C and Embedded C?

9 57740

Write a C Programm.. we press 'a' , it shows the albhabetical number is 1, if we press 'g' it shows the answer 7.. any can help me

7 7996

We can draw a box in cprogram by using only one printf();& without using graphic.h header file?

NIIT,

4 9770

How can draw a box in cprogram without using graphics.h header file & using only one printf(); ?

NIIT,

4 9185

what are advantages of U D F?

Google,

1 2195

hi folks i m approching for h1 b interview on monday 8th of august at montreal and i m having little problem in my approval notice abt my bithdate my employer has made a mistake while applying it is 12th january and istead of that he had done 18 the of january do any body have any solution for that if yes how can i prove my visa officer abt my real birthdate it urgent please let me know guys thaks dipesh patel

1385

Print all numbers which has a certain digit in a certain position eg: number=45687 1 number=4 2 number=5 etc

4 4256

Reverse the part of the number which is present from position i to j. Print the new number. eg: num=789876 i=2 j=5 778986

1 3000

Reverse the part of the number which is present from position i to j. Print the new number.[without using the array] eg: num=789876 i=2 j=5 778986

2 3879

print the following using nested for loop. 5 4 3 2 1 1 2 3 4 3 2 1 1 2 1 2 1 1 2 3 4 3 2 1 1 2 3 4 5

IBM,

7 12085

Print all the palindrome numbers.If a number is not palindrome make it one by attaching the reverse to it. eg:123 output:123321 (or) 12321

HCL,

7 11253

C program to find all possible outcomes of a dice?

1832

C program to find frequency of each character in a text file?

6 35632

write a own function for strstr

LG Soft,

1 11228


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Un-Answered Questions { C }

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.

1485


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

3874


what do u mean by Direct access files? then can u explain about Direct Access Files?

1614


If the size of int data type is two bytes, what is the range of signed int data type?

563


What functions are in conio h?

635






What are static variables in c?

599


What is bin sh c?

558


What is printf () in c?

555


What is a null pointer in c?

567


Explain what is the difference between text files and binary files?

587


How do I round numbers?

575


What's the right way to use errno?

598


What is use of null pointer in c?

547


Can two or more operators such as and be combined in a single line of program code?

786


Why header file is used in c?

544