上次,我们探讨了C++关于文件的读操作,这次继续写操作。写,顾名思义,就是把我们自己的东西放到文件中去。
我们举一个简单的例子,就不在乎它的排版问题了。
#include<iostream>
#include<fstream>
using namespace std;
int main()
{
char theme[50];
int year;
int month;
int day;
ofstream outFile;
outFile.open("1.txt");//新建文件
cout<<"input:";
cin.getline(theme,50);
cout<<"year:";
cin>>year;
cout<<"month:";
cin>>month;
cout<<"day:"
cin>>day;
//控制台显示
cout<<fixed;
cout.precision(2);
cout.setf(ios_base::showpoint);
cout<<"date:"<<theme<<endl;
cout<<"year:"<<year<<endl;
cout<<"month:"<<month<<endl;
cout<<"day:"<<day<<endl;
//文件写入
outFile<<fixed;//把上面所有的cout替换为outFile
outFile.precision(2);
outFile.setf(ios_base::showpoint);
outFile<<"date:"<<theme<<endl;
outFile<<"year:"<<year<<endl;
outFile<<"month:"<<month<<endl;
outFile<<"day:"<<day<<endl;
return 0;
}
然后成功写入!