double fact(int n) { if (n==0) return 1; else return n*(fact
1个回答
这是递归函数的使用 求阶乘的.
例如
f(5) = 5*f(4)=5*4*f(3)=5*4*3*f(2)=5*4*3*2*f(1)=5*4*3*2*1*f(0) = 5*4*3*2*1*1
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