KwCheng's blog

ostringstream provides an interface to manipulate strings as if they were output streams.

因為ostringostream is inherit from ostream.

so we can declear a output stream object , and insert value into this output object.

then we can use the method of ostringstream to manipulate the string.

以下的example是說明如何將integer轉換成string的形式.

其中針對str() 的說明為: The first version returns a copy of the string object currently associated with the string stream buffer.

int main()

{

 int abc = 123;

std::ostringstream out;

out << abc;

std::cout << out.str() << std::endl;

return 0;

}

ref : http://www.diybl.com/course/3_program/c++/cppsl/2008810/135616.html

ref : http://www.cplusplus.com/reference/iostream/ostringstream/str/