C++程序设计原理与实践 第三章答案交流使用

本人目前大一，非计算机专业自学C++,发上来也是想让大家指导指导，互相学习。
不定期更。
3.2

#include"std_lib_facilities.h"
int main()
{
	double km = 1;
	cout << "enter the value of miles\n";
	cin >> km;
	double miles = 1.609 * km;
	cout << miles;
}

3.4

#include"std_lib_facilities.h"
int main()
{
	int val1;
	int val2;
	cout << "please enter two int value\n";
	cin >> val1 >> val2;
	if (val1 < val2)
		cout << "max:" << val2 << " min" << val1 ;
	else
		cout << "max:" << val1 << " min" << val2 ;
	cout << "\nsum=" << val1 + val2
		<< "\ndv=" << val1 - val2
		<< "\nproduct=" << val1 * val2
		<< "\nspecific value=" << val1 / val2
		<< '\n';