With Function Factorial

#include <stdio.h>

int main(){
  int number;

  printf("Enter a number");
  scanf("%d", &number);

  printf("%d", factorial(number));

  return 0;
}

int factorial(int n){
  int c;
  long result = 1;

  for (c = 1; c <= n; c++){
    result = result * c;
  }
  return result;
}