getline(istream &in, string &s)
从输入流读入一行到string s
•功能:
–从输入流中读入字符,存到string变量
–直到出现以下情况为止:
•读入了文件结束标志
•读到一个新行
•达到字符串的最大长度
–如果getline没有读入字符,将返回false,可用于判断文件是否结束
- #include<iostream>
- #include<fstream>
- #include<string>
- using namespace std;
- int main()
- {
- string buff;
- ifstream infile;
- ofstream outfile;
- cout<<"Input file name: "<<endl;
- cin>>buff;
- infile.open(buff.c_str());
- if(!infile)
- cout<<"error"<<buff<<endl;
- cout<<"Input outfile name: "<<endl;
- cin>>buff;
- outfile.open(buff.c_str());
- while(getline(infile, buff))
- outfile<<buff<<endl;
- infile.close();
- outfile.close();
- return 0;
- }