Question { 9384 }

What is the return type of a program?s main() method?

Answer

it's void means return no
value

Question { Satyam, 23454 }

What are the basic functions of an operating system?

Answer

The main OS functions are as follows:-
1) Process Management
2) Memory Management
3) Storage Management
4) File System Management
5) Input/Output Management

Question { Assurgent, 6001 }

hat is a pointer?

Answer

A pointer is a datatype whose value refers directly to (or "points to") another value stored elsewhere in the computer memory using its address.

Question { Wipro, 5721 }

what is structuer?

Answer

For dealing with different types of data(e.g. int, float, char,etc.)at a time, C provides a data type called ‘structure’. A structure gathers together, different atoms of information that comprise a given entity.

Question { 3196 }

what is bluetooth?

Answer

Bluetooth is a wireless technology for exchanging data over
short distances from fixed and mobile devices creating
Personal Area Networks(PAN)with high level security.

Question { 9880 }

There are 2 empty jars of 5 and 3 liters capacity. And a
river is flowing besides. I want to measure 4 liters of
wanter using these 2 jars. How do you do this?

Answer

First of all fill 3litre jar fullyand then pour it into
5litre jar.Now again fill 3litre jar fully and pour it into
5litre jarNow 5litre jar is full and 3litre jar has 1litre
water. Now pour all the water of 5litre jar on the ground
and pour the 3litre's jar 1 litre into 5 litre jar. Now
again fill 3litre jar fully and pour into 5litre jar .Now
5litre jar has 4litre water.
You can simply understand as:-
1)3l jar=3,5l jar=0
2)3l jar=0,5l jar=3
3)3l jar=3,5l jar=3
4)3l jar=1,5l jar=5
5)3l jar=1,5l jar=0
6)3l jar=0,5l jar=1
7)3l jar=3,5l jar=1
8)3l jar=0,5l jar=4

Question { TCS, 6449 }

why array index always starts from zero??

Answer

It uses the concept of Binary digits. Take an array size of 64 for example. We start from 0 and end at 63,
We require 6 bits.But, if we were to start from 1 and end at 64, we would require 7 bits to store the same number,
thus increasing the storage size.