c++ 格式读取文件

本文转自http://bbs.csdn.net/topics/390294887

文件每行如下：

2 "Anthony van Raan" 9

把第一列存入到整数中，中间存入到字符串数组中，最后存入到一个整数中

ifstream fin("data.txt");

string s;

getline(fin,s);

之后如何将s分开

# include <iostream>
# include <sstream>

using namespace std;

int main()
{
string s = "2 \"Anthony van Raan\" 9";
const char * digits = "0123456789";

string::iterator it1 = s.begin();
string::iterator it2 = s.begin() + s.find_first_not_of(digits);
string::iterator it3 = s.begin() + s.find_last_not_of(digits) + 1;
string::iterator it4 = s.end();

string s1(it1, it2);
string s2(it2, it3);
string s3(it3, it4);

int first, last;
char str[BUFSIZ];

stringstream(s1) >> first;
strcpy(str, s2.c_str());
stringstream(s3) >> last;

cout << first << endl
<< str << endl
<< last << endl;

return 0;
}