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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.  
  6. 	int ans1 = 1;
  7. 	for (int i = 2; i <= 10; i++) {
  8. 		ans1 = ans1 * i; // 累乘
  9. 	}
  10. 	cout << "10! = " << ans1 << endl;
  11.  
  12. 	int ans2 = 1;
  13. 	for (int i = 2; i <= 100; i++) {
  14. 		ans2 = ans2 * i; // 累乘
  15. 	}
  16. 	cout << "100! = " << ans2 << endl; // Overflow!!! 溢位
  17.  
  18. 	double ans3 = 1;
  19. 	for (int i = 2; i <= 100; i++) {
  20. 		ans3 = ans3 * i; // 累乘
  21. 	}
  22. 	cout << "100! = " << ans3 << endl;
  23.  
  24. 	for (int i = 3; i <= 100; i = i + 2) {
  25. 		if (i % 7 == 0 && (i % 3 == 0 || i % 5 == 0)) {
  26. 			cout << i << " ";
  27. 		}
  28. 	}
  29. 	cout << endl;
  30. 	return 0;
  31.  
  32. }
Success #stdin #stdout 0s 4292KB
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Standard input is empty
stdout
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10! = 3628800
100! = 0
100! = 9.33262e+157
21 35 63
https://ideone.com/7U9DFS
for迴圈課堂練習三連發
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
secret

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