Factorial program in C

Factorial program in C

C code to find and print factorial of a number, three methods are given, first one uses for loop, second uses a function to find factorial and third using recursion. Factorial is represented using !, so five factorial will be written as (5!), n factorial as (n!). Also
n! = n*(n-1)*(n-2)*(n-3)...3.2.1 and zero factorial is defined as one i.e. 0! = 1.

FACTORIAL PROGRAM IN C USING FOR LOOP

Here we find factorial using for loop.

#include 
 
int main()
{
 int c, n, fact = 1;
 
 printf("Enter a number to calculate its factorial ");
 scanf("%d", &n);
 
 for (c = 1; c <= n; c++)
 fact = fact * c;
 
 printf("Factorial of %d = %d ", n, fact);
 
 return 0;
}

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