Factorial: using symbol “! ”
Mathematical Example : 5! = 120 (5*4*3*2*1=120))
Program: #include<stdio.h> int main() { int i,fact,number; printf("Enter a number: "); scanf("%d",&num); for(i=1,fact=1;i<=num;i++){ or (for(i=num,fact=1;i<=1;i--)) fact=fact*i; } printf("Factorial of %d is: %d",num,fact); return 0; }
Output: Enter a number: 9 Factorial of 9 is: 362880