5.5 factorial

• menghitung factorial rekursif
• cpp
  

  #include <iostream>
  using namespace std;
  
  /* run this program using the console pauser or add your own getch, system("pause") or input loop */
  int fac(int n){
      if(n>1) return fac(n-1)*n;
      else return 1;
  }
  int main(int argc, char** argv) {
      int a;cout<<"factorial : ";cin>>a;
      cout<<fac(a);
      return 0;
  }