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  1. #include<iostream>
  2. using namespace std;
  3. int main()
  4. {
  5. int number;
  6. int i;
  7. int fact;
  8. cout << "input number" << endl;
  9. cin >> number;
  10. for(i=1,fact=1;i<=number;i++)
  11. {
  12. fact = fact * i;
  13. }
  14. cout <<"factor = "<< fact << endl;
  15. return 0;
  16. }
Success #stdin #stdout 0s 3300KB
stdin
5
stdout
input number
factor = 120