GESP2024年6月认证C++八级( 第二部分判断题（1-5））

判断题2：

#include <iostream>
#include <iomanip>
using namespace std;int main() {double a = 1e308;double b = 1e-10;double orig_a = a, orig_b = b;a = a + b;b = a - b;a = a - b;cout << fixed << setprecision(20);cout << "交换后: a = " << a << ", b = " << b << endl;if (a == orig_b && b == orig_a) {cout << "double 类型交换成功！" << endl;} else {cout << "double 类型交换失败！" << endl;}return 0;
}