C++输入输出知识

#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<fstream>
using namespace std;
int main()
{
    /*
        fstream fin("input.txt",ios::in); fin>>value
        fstream fin("output.txt",ios::out); fin<<value
    */ 
    char p[]="i am a student, you are a student too.";
    char *s=strtok(p," ");
    while(s!=NULL)
    {
        cout<<s<<endl;
        s=strtok(NULL," ");
    }
    
    return 0;
}