factorial program

[yusuke]

can you please answer this:thanks!!!

write a factorial function that returns a factorial of a long int number. Enter the number at the main funtion and call factorial() to carry on calculations and return the result.

[chella]

can you please answer this:thanks!!!

write a factorial function that returns a factorial of a long int number. Enter the number at the main funtion and call factorial() to carry on calculations and return the result.

Hi,
U try writing the code and let us know if u have any problem with it.

Regards,
Chella

[yusuke]

sorry,, i really dont know... im still a new student of programming and this program is for advance study. can u help me w/ this?
thanks!

[Banfa]

The experts on this site are more than happy to help you with your problems but they cannot do your assignment/program for you. Attempt the assignment/program yourself first and post questions regarding any difficulties you have or about a particular function of the code that you don't know how to achieve.

Please read the Posting Guidelines and particularly the Coursework Posting Guidlines.

Then when you are ready post a new question in this thread.

Administrator

Do you know how to calculate a factorial on paper? Say 5!.

[Mack]

Try using Recursion else simple for loop will work for you , I understand you are beginner same was with me , although i respect all alongwith you.
something like this will go .
see
for (i=0; i<num;i++)
i=i*(i-1)

retun(i)

see this is not way its going to work its just clue to you , so u get enthu to work further on it.

Regards,
Mack.

[Extremist]

Here's a tip:

Think recursion, it makes your function about 5 lines...

Not so hard...

Go have a look in the forum, There is a complete Factorial recursion function here...
;-)

[yusuke]

The experts on this site are more than happy to help you with your problems but they cannot do your assignment/program for you. Attempt the assignment/program yourself first and post questions regarding any difficulties you have or about a particular function of the code that you don't know how to achieve.

Please read the Posting Guidelines and particularly the Coursework Posting Guidlines.

Then when you are ready post a new question in this thread.

Administrator

Do you know how to calculate a factorial on paper? Say 5!.

yes i can... the factorial of 5 is 120...thanks!!!

[infonite]

can you please answer this:thanks!!!

write a factorial function that returns a factorial of a long int number. Enter the number at the main funtion and call factorial() to carry on calculations and return the result.

<code snipped in accordance with the posting guide lines>

<edit=Banfa>
Please read the Posting Guidelines and particularly the Coursework Posting Guidlines.</edit>

[Banfa]

yes i can... the factorial of 5 is 120...thanks!!!

So you know the mathematical method to get the result of a factorial.

The next step is to write that method down as a series of simple instructions (in any language you like)

And finally you convert those instructions into C

[yusuke]

So you know the mathematical method to get the result of a factorial.

The next step is to write that method down as a series of simple instructions (in any language you like)

And finally you convert those instructions into C

#include<stdio.h>
int c(int a);
main()
{
	int a;
	printf("Enter a number:");
	scanf("%d",&a);

	printf("The factorial number is: ");
	printf("%d",c(a));
	return 0;
}
int c(int a)
{
	int b,z;
	b=1;
	for(z=1;z<=a;z++){
	b=b*z;
	}
	return b;
}

i think i got it right this time...thank u guyzzzzzzzz!!!! !!

[Banfa]

Looks like it will work, however

1. c is not a good name for a function

2. There is a limit to the input number after which overflow of the integer will cause the answer to be wrong. You may want to consider finding the limit and putting in a check to reject numbers that are too big to calculate.