数字转string的几种方法...

#include <cstdlib>
#include <iostream>
#include <string>
#include <sstream>
using namespace std;
const int MAX = 100;
/*frist method*/
inline void numToString0(int value)
{
    string str;
    char buf[MAX];
    
    sprintf(buf, "%d", value);
    str = buf;
    
    cout << str << endl;
}
/*second method*/
inline void numToString1(int value)
{
    stringstream ss;
    string str;
    
    ss << value;
    ss >> str;
    
    cout << str << endl;
}
/*third method*/
inline void numToString2(int value)
{
    ostringstream os;
    os << value;
    
    cout << os.str() << endl;
}
int main(int argc, char *argv[])
{
    int value;
    cin >> value;
    
    numToString0(value);
    numToString1(value);
    numToString2(value);
    
    /*string to numeric*/
    stringstream ss;
    string str("123456778");
    int i;
    ss << str;
    ss >> i;
    cout << i << endl;
    /*end*/
    
    system("PAUSE");
    return EXIT_SUCCESS;
}