第七次实验

#include<iostream>
using namespace std;
int main() {
    ios_base::fmtflags original_flags = cout.flags(); 
    cout << 812 << ‘|‘;
    cout.setf(ios_base::left, ios_base::adjustfield);
    cout.width(10);
    cout << 813 << 815 << ‘\n‘;
    cout.unsetf(ios_base::adjustfield); 
    cout.precision(2);
    cout.setf(ios_base::uppercase | ios_base::scientific); 
    cout << 831.0;
    cout.flags(original_flags);
    return 0;
}

#include<iostream>
#include<fstream>
#include<Windows.h> 
using namespace std;
int main()
{    
    ofstream outFile;
    outFile.open(("D:\\biubiubiu.txt"));
       outFile<<"well done!"<<endl;
       outFile.close();
       WinExec("notepad.exe D:\\biubiubiu.txt",SW_SHOW);
       system("pause");
    return 0;
}

#include<iostream>
#include<fstream>
#include<string> 
using namespace std;
int main()
{
    
        ifstream outFile("D:\\biubiubiu.txt");
        string file;
        if(outFile)
        {
            while(getline(outFile,file))
            {
                cout<<file<<endl;
            }
        }
        outFile.close();
    return 0;
}