AMIE INDIA Students Forum

[Piya]

#include<iostream.h>
#include<conio.h>

void main()
{
int j,no;
int factorial(int); //initinalize the function
// cout<<" --<<ENTER THE NUMBER>>--";
// cin>>no;
for(j=0;j<no;j++)
cout<<"\n"<<"THE FACTORIAL OF:-"<<j<<"="<<factorial(j);
}
factorial(j)

{
int n;
n=j;
int fact;
if(n==0)
return 1;
else
{
fact=n*factorial(n-1); //the last factorial is multiple with the number
return fact; //return value.
}

}

[praveen]

Thanks for the program..

[irfanmasiullah]

Hello.

I have one doubt...
I study c++ by video and compiled also on Dec c++ compiler.
# include <iostream> /* THIS IS I learned by video and complier accept this*/
but I saw in your program #include <iostream.h>

Please clearify....
Thanks

[charulatha]

as far as i studied #include <iostream.h> is correct. u have to add .h (header).

[irfanmasiullah]

Hello.
I c its require, like #include <stdio.h>

when I compiled putting .h also then compiler says its wrong.
If you give me your email address, I will send come video tutorial also.

Regards
Irfan
irfanmasiullah@gmail.com

[rohit.wadhwa]

Hello C++ fans,

I have observed that when using #include<iostream.h> , using namespace std; is not required.
(Namespaces are used to avoid multiple symbol definitions when using several libraries.you already know.)

Code: Select all

<iostream>

is the standard header

Code: Select all

<iostream.h>

is the old standard header, not longer supported by some compilers

but remember you can't write conio in place of 'conio.h' like iostream.

A frequent piece of advice is often given to new C++ programmers is to use <iostream> instead of <iostream.h> or <fstream> instead of <fstream.h> [according to you compiler version]

Here is a link I found that gives some background on why there are two versions of iostream headers. You could probably find a lot of articles on the subject using a search engine. I searched on "iostream vs. iostream.h".
http://members.gamedev.net/sicrane/articles/iostream.html
hope its clear you doubt.

[irfanmasiullah]

Thank you Mr. Rohit.
You are always helpfull.

[ram1ramji]

Thank you...Useful discussion...

Regards
Ramji