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  1. #include <iostream>
  2.  
  3. int facto(int k)
  4. {
  5.     int n(1);
  6.     while (n < k + 1)
  7.     {
  8.         n = n * (n + 1);
  9.         n++;
  10.     }
  11.     return n;
  12. }
  13.  
  14. void do_test(int arg, int expected)
  15. {
  16. 	std::cout << arg << "! " ;
  17.  
  18. 	int result = facto(arg) ;
  19.  
  20. 	if (result == expected)
  21. 		std::cout << "Pass!\n" ;
  22. 	else
  23. 		std::cout << "Fail! Result: " << result << " Expected: " << expected << '\n'; 
  24. }
  25.  
  26. void test_factorial()
  27. {
  28. 	do_test(4, 4*3*2) ;
  29. 	do_test(3, 3*2) ;
  30. 	do_test(2, 2) ;
  31. 	do_test(1, 1) ;
  32. 	do_test(0, 1) ;
  33. }
  34.  
  35. int main()
  36. {
  37.     test_factorial();
  38. }
Success #stdin #stdout 0s 3296KB
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stdin
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Standard input is empty
stdout
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4! Fail! Result: 13 Expected: 24
3! Fail! Result: 13 Expected: 6
2! Fail! Result: 3 Expected: 2
1! Fail! Result: 3 Expected: 1
0! Pass!
https://ideone.com/l4UJ0h
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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