摘要: #include <iostream>using namespace std;int main() { double sgn(double x); double x, y; cout << "请输入一个数:" << endl; cin >> x ; y = sgn(x); cout << "函数值为 阅读全文
posted @ 2020-04-05 19:05 木屋小丑 阅读(3746) 评论(0) 推荐(0)