【2018.2.25】c++预习练习

学了一学期c语言之后预习c++，一些最基础的东西做起来还是得心应手的，先练练手感🙈C++ primer plus 和教材同步学习，大概会比上学期抓瞎学习要好得多吧。

#include<iostream>
int main()
{
    using namespace std;
    cout << "Enter the distance measured by furlong";
    int fur;
    cin >> fur;
    cout << "convert the furlong to yard\n" << 220*fur;    //数值函数直接表示 
    return 0;
}

#include<iostream>
using namespace std;    //名称空间于函数之前
double convert(double x);
int main()
{
    cout << "Please enter a Celsius value:";
    double cel;
    cin >> cel;
    cout << cel <<" degrees Celsius is " <<convert(cel)<<" degrees Fahrenheit.";
    return 0;
}
double convert(double x)
{
    double y;
    y=1.8*x+32.0;
    return y;
}