Answer / rekha

Overriding - same method names with same arguments and same
return types associated in a class and its subclass.

Overloading - same method name with different arguments, may
or may not be same return type written in the same class itself.

Answer / pugalarasu

Overloading:
Same function name but different arguments
Eg:
A(int i);
A(int i,float f);

Overriding:
refers to functions that have the same signature as a
virtual function in the base class:
class B {
virtual void V();
};

class D : public B {
viod V();
};

Answer / rakurakesh

Method overloading
done in same
class but method overridng done in
diff. Class here inheritance occure.

There are 21 people in a room. They have to form groups of 3 people each. How many combinations are possible? Write a C program to print the same.

1 Answers   HCL, iGate,

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What is the difference between File pointer and Internal Charecter Pointer?

2 Answers   TATA,

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What does void main () mean?

0 Answers  

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What is wrong with this program statement? void = 10;

0 Answers  

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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.

0 Answers  

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how do u find out the number of 1's in the binary representation of a decimal number without converting it into binary(i mean without dividing by 2 and finding out the remainder)? three lines of c code s there it seems...can anyone help

5 Answers  

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If 4 digits number is input through the keyboard, Write a program to calculate sum of its 1st & 4th digit.

12 Answers   Google,

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what is develop in c language

2 Answers  

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i want to switch my career from quailty assurance engineering to development kindly guide me from which programming language its better for me to start plz refer some courses or certifications too i have an experience of 1.5 yrs in QA field.Kindly guide me

0 Answers   Microsoft,

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What does stand for?

0 Answers  

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can we store values and addresses in the same array? explain

3 Answers   TCS,

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Hai sir, I had planned to write the NIC scientific engineer exam , plz post the sample question......

0 Answers  

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