入门计划->使用(C++库)istringstream输入(格式化)

//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:

  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
#include
#include
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;
}
输出:

#123 1.23 aaa ,zzz kk,k oo.jjj
#
123
1.23
aaa
zzz
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