C++/C:数字转成字符串, 字符串转成数字

数字转成字符串：

用C++的streanstream:

#include <sstream>
#include <string>
string num2str(int i)
{
   stringstream ss;
   ss<<i;
   return ss.str();
}</strong></span>

字符串转成数字：

用C++的streanstream:

int str2num(string s)
 {   
    int num;
    stringstream ss(s);<span style="display: none; width: 0px; height: 0px;" id="transmark"></span>
    ss>>num;
    return num;
}</span>