入门计划->使用(C++库)istringstream输入(格式化)

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不太明白

//awzzz@2002
//入门计划->使用(C++库)istringstream输入(格式化)
//APO->using istringstream.
//accidence project of using istringstream.(c++ iostream library)

/*
Reference: http://www.cplusplus.com/ref/iostream/istringstream/ 
Description

istringstream class provides an interface to manipulate strings as if
they were input streams.

The objects of this class mantain internally a pointer to a stringbuf
object that can be obtained/modified by calling member rdbuf. This
streambuf-derived object stores a sequence of characters (string) that
can be obtained/modified by calling member str.
*/

//使用(C++库)istringstream输入(格式化)
//simple example

#include <iostream>
#include <sstream>
#include <string>
using namespace std;

void test()
{
{
//istringstream iss;
//iss.str("#123 1.23 aaa ,zzz kk,k oo.jjj");
istringstream iss("#123 1.23 aaa ,zzz kk,k oo.jjj");

cout << iss.str() << endl;

char ch;
iss >> ch;
cout << ch << endl;

int i;
iss >> i;
cout << i << endl;

float f;
iss >> f;
cout << f << endl;

char buf[1024];
iss >> buf;
cout << buf << endl;

iss.ignore(100, ',');
iss >> buf;
cout << buf << endl;
}
}

int main(int argc, char* argv[])
{
test();
return 0;
}