string char int sstream

#include<cstdio>
#include<cstdlib>
#include<cmath>
#include<cstring>
#include<string>
#include<algorithm>
#include<iostream>
#include<sstream>
using namespace std;
int main()
{
    stringstream a;int n;
    char num[10000]="32333";
    string b=num;
    printf("%s\n",b.c_str());
    string b;
    a<<num;
    a>>n;
    a.clear();    a.clear();
    a<<num;
    a>>b;
    printf("%d\n",n);
    printf("%s\n",b.c_str());

        return 0;
}