_______ fact(int n)

{

int i;

_______ product;

product = 1;

for (i = 1; i <= n; i++){

product = product * i;

}

return product;

}

A, b = 0;下列叙述中正确的是( ) 。

Flag = 1;

Denominator = 1;

Item = 1.0;

Pi = 0;

While(fabs(item) >= 0.0001){

item = flag * 1.0 / denominator;

pi = pi + item;

flag = -flag;

denominator = denominator + 2;

}

Flag = 1;

Denominator = 1;

Item = 1.0;

Pi = 0;

While(fabs(item) > 0.0001){

item = flag * 1.0 / denominator;

pi = pi + item;

flag = -flag;

denominator = denominator + 2;

}