7.6

#include <iostream>
#include <strstream>
using namespace std;
typedef struct student
{int num;
char name[20];
double score;
};
int main()
{
student stud[3]={1001,"Li",78,1002,"Wang",89.5,1004,"Fun",90}, dstud1[3];
student stud1[3];
char c[50];
int i;
ostrstream strout(c,50);
for(i=0;i<3;i++)
strout<<stud[i].num<<" "<<stud[i].name<<" "<<stud[i].score<<" ";
strout<<ends;
cout<<"array c:"<<endl<<c<<endl<<endl;
istrstream strin(c,50);
for(i=0;i<3;i++)
strin>>stud1[i].num>>stud1[i].name>>stud1[i].score;
cout<<"data from array c to array stud1:"<<endl;
for(i=0;i<3;i++)
cout<<stud1[i].num<<" "<<stud1[i].name<<" "<<stud1[i].score<<endl;
cout<<endl;
return 0;
}