Finding factorial of a number:Algorithm,Flowchart

This article is about find factorial of a number.Before any discussion we should know what is factorial?
Factorial of a number=number!
Ex.factorial of 6!=6*5*4*3*2*1=120
factorial of 0!=1
Algorithm and flowchart:-In previous articles Algorithm of roots of polynomial equation and flowchart of roots of polynomial equation we discuss algorithm and flowchart of square roots of polynomial equation.I think you get some idea about algorithm and flowchart from previous articles.for more understanding about the concept we discuss factorial of a number.
Problem:Finding factorial of a number n
Algorithm:-
Step:1 Start
Step:2 Read a number n
Step:3 if(n<0)
write"factorial of negative numbers is not possible" and exit
(end of if statement)
Step:4 if(n=0)
write"factorial of 0=1" and exit
Step:5 fact=1
for(m=1;m<=n;m++)
{
fact= fact*m
}
Step:6 write"factorial".
Step:7 Stop
flowchart:-
flowchart of factorial of a number n

Friends,
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