问题:

解答:

#include <iostream>
using namespace std;

int main()
{
	float miles = 0;
	float gallons = 0;
	float gallon = 0;
	cout << "请输入驱车里程(单位为英里):";
	cin >> miles;
	cout << "请输入使用的汽油量(单位为加仑):";
	cin >> gallons;
	gallon = miles / gallons;
	cout <<"每加仑的里程为:" << gallon << "英里" << endl;

	return 0;
}

运行结果:

呵呵,不愿意,就一个小小的除法,竟敢班门弄斧.