基本输入输出之从键盘读取数据

/*从键盘读取数据
  1.使用cin对象从键盘输入数据
  2.提示输入*/
#include<iostream>
#include<iomanip>
usingnamespace std;
int main()
{
        double income,expense;
        int month;

        cout<<"What month is it?"<<endl;
        cin>>month;
        cout<<"You have entered the month="<<month<<endl;
        cout<<"Please enter your income and expenses"<<endl;
        cin>>income>>expense;
        cout<<setprecision(2)
                <<setiosflags(ios::fixed|ios::showpoint)
                <<"Entered income=$"<<income
                <<",expenses=$"<<expense<<endl;
        return0;
}