Answer:
I'll happy to help
Explanation:
Please make your clear. I couldn't understand!
HISTSIZE is the environment variable affects the number of past commands used in the current shell session.
When it comes to front end, back end and full stack developer, the difference is determined by :
front end (the visible parts of a website)
back end (the “under the hood” databases and infrastructure)
full stack (a hybrid of both)
And front end developers work on technologies that are used to build front end(which is what clients visiting that website see)of application like HTML,CSS, Javascript ( Node js, Angular are also now used ).
Similarly back end developers work on back end technologies like Node js.
Full stack developers work on both front end and back end developers and know both end technologies as well.
For example :
MEAN Stack developer where
M stands for Mongoose ( Back end database technology )
E stands for Express ( Back end technology)
A stands for angular ( front end technology)
N stands for Node ( back end technology)
Answer:
Yes, overloading is one of the methods which are popular in programming language. Overloading basically refers to the same function but different signature called function overloading or method overloading. It is the ability to define the multiples method by using the single identifier.
The overloading is important because it has the ability to design the multiple method by using similar name. It also provide the high flexibility to the programmers to call the same method in the data. overloading basically provide the high clarity in the code.
Overloading is used to achieved the compile time polymorphism.
Following are program of function overloading in c++ are:
Class abc // creating class
{
public:
int p;
void fun() // function fun with no parameter/
{
cout<<” hello “;
}
void fun(int a) // function fun with parameter
{
p=a;
cout<<p;
}
};
int main() // main function
{
abc ob; // creating object
ob.fun();// print hello;
ob.fun(6);// print 6
return 0;
}
Explanation:
In this program the function fun() have same name but different signature in the main method we create the object of class abc i.e ob. ob.fun() this statement called the function with no parameter and ob.fun(6) this statement will called the function with integer parameter.
Answer:
optical
Explanation:
The earliest of these was the magnetic device. Computer systems began with magnetic storage in the form of tapes (yes, just like a cassette or video tape). These graduated to the hard disk drive and then to a floppy disk.
