Question

c++中如何将文件中的内容释放

Answer 1

#include <iostream>
#include <fstream>
using namespace std;
int main()
{
ofstream outfile,out;
int choice;
char a[100];
cout<<"请输入写入文件的内容"<<endl;
cin>>a;
outfile.open("111.txt");
if (outfile.is_open())
{
cout<<"文件打开成功"<<endl;
}
outfile<<a;
cout<<"写入文件成功"<<endl;
outfile.close();
cout<<"是否清空文件内容 1==是 0==否"<<endl;
cin>>choice;
if (choice)
{
out.open("111.txt");
out<<' ';
cout<<"已删除文件内容"<<endl;
out.close();
}
else
{
cout<<"没有删除文件内容"<<endl;
}
return 0;

}