strings ＜－－－＞ numbers

strings －－－＞ numbers

 1 #include "stdafx.h"
 2 #include <iostream>
 3 #include <sstream>
 4 using namespace std;
 5 
 6 int _tmain(int argc, _TCHAR* argv[])
 7 {
 8     stringstream os;
 9     os << "12345 67.89"; // insert a string of numbers into the stream
10     int nValue;
11     double dValue;
12 
13     os >> nValue >> dValue;
14 
15     cout << nValue << " " << dValue << endl;
16 
17     return 0;
18 }

numbers －－－＞ strings

 1 #include "stdafx.h"
 2 #include <iostream>
 3 #include <sstream>
 4 using namespace std;
 5 
 6 int _tmain(int argc, _TCHAR* argv[])
 7 {
 8     stringstream os;
 9 
10     int nValue = 12345;
11     double dValue = 67.89;
12     os << nValue << " " << dValue;
13 
14     string strValue1, strValue2;
15     os >> strValue1 >> strValue2;
16 
17     cout << strValue1 << " " << strValue2 << endl;
18 
19     return 0;
20 }