问题及代码:
#include <iostream>
#include <fstream>
using namespace std;
int main()
{
fstream outfile,infile;
outfile.open("data.dat",ios::out);
outfile<<"1111111111"<<endl;
outfile<<"aaaaaaaaaa"<<endl;
outfile<<"AAAAAAAAAA"<<endl;
outfile<<"**********"<<endl;
outfile.close();
infile.open("data.dat",ios::in);
char line[80];
int i=0;
while(!infile.eof())
{
i++;
infile.getline(line,sizeof(line));
cout<<i<<": "<<line<<endl;
}
infile.close();
return 0;
}
运行结果:
知识点总结:
outfile 输出数据到文件
infile 从文件中读入数据