28 下列函式為檢測一個整數是否為質數,有關第 8 行 for(????)程式,下列何者正確?

(A) for (int i = sqrt(n); i >=0 ; i -= 2)
(B) for (int i = n; i >=0 ; i--)
(C) for (int i = 1; i <= sqrt(n); i += 2)
(D) for (int i = 3; i <= sqrt(n); i += 2)
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統計: A(19), B(24), C(53), D(79), E(0) #3564155
統計: A(19), B(24), C(53), D(79), E(0) #3564155