To Find Factorial of a Number Factorial of a Number For any positive number n , its factorial is given by: factorial = 1 * 2 * 3 * 4. ... n If a number is negative, factorial does not exist and factorial of 0 is 1. This program takes an integer from a user. If user enters negative integer, this program will display error message and if user enters non-negative integer, this program will display the factorial of that number. Source Code /* C program to display factorial of an integer if user enters non-negative integer. */ #include <stdio.h> int main () { int n , count ; unsigned long long int factorial = 1 ; /* you can only write int */ printf ( "\nEnter an integer: \n" ); scanf ( "%d" ,& n ); if ( n < 0 ) printf ( "\nError!!! Factorial of negative number doesn't e...
Comments
Post a Comment