Question

c++文件操作<fstream>

#include<iostream>
#include<fstream>
using namespace std;

void main()
{

char line[180];
fstream myfile;
myfile.open("cpp2.txt",ios::out|ios::trunc);
if(!myfile)
{
cerr<<"File open or create error!"<<endl;
exit(1);
}
while(cin>>line)
{
myfile<<line<<endl;
}
myfile.close();
}
这里怎么控制它输入结束啊，总不能一直输入吧，给个idea

Answer 1

#include<iostream>
#include<fstream>
using namespace std;

void main()
{

// char line[180];
char ch;
fstream myfile;
myfile.open("cpp2.txt",ios::out|ios::trunc);
if(!myfile)
{
cerr<<"File open or create error!"<<endl;
exit(1);
}
while(/*cin>>line*/cin>>ch,ch!='#')
{
//myfile<<line<<endl;
myfile<<ch;
}
myfile<<endl;
myfile.close();
}