Friday, July 1, 2022

FACTORIAL

THERE ARE THREE DIFFERENT METHODS FOR SOLVING FACTORIAL PROBLEM WHICH ARE AS FOLLOWS—–

METHOD NO-1–>

  # include <stdio.h>

 
int main()
{
int c, n, fact = 1;
 
printf("PleasevEnter a number to calculate factorialn");
scanf("%d", &n);
 
for (c = 1; c <= n; c++)
fact = fact * c;
 
printf("Factorial of %d = %dn", n, fact);
 
return 0;
}




METHOD NO-2-->
#include <stdio.h>
 
long factorial(int);
 
int main()
{
int number;
long fact = 1;
 
printf("Please Enter a number to calculate factorialn");
scanf("%d", &number);
 
printf("%d! = %ldn", number, factorial(number));
 
return 0;
}
 
long factorial(int n)
{
int c;
long result = 1;
 
for (c = 1; c <= n; c++)
result = result * c;
 
return result;
}

METHOD NO-3-->
#include<stdio.h>
 
long factorial(int);
 
int main()
{
int n;
long f;
 
printf("Please Enter an integer to find factorialn");
scanf("%d", &n);
 
if (n < 0)
printf("Negative integers are not allowed.n");
else
{
f = factorial(n);
printf("%d! = %ldn", n, f);
}
 
return 0;
}
 
long factorial(int n)
{
if (n == 0)
return 1;
else
return(n * factorial(n-1));
}
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