demo_6_string_stream_3_a.cpp

对于一个初涉VC＋＋的人来书

//***************************************************

# include <iostream>
# include <strstream>

using namespace std;

struct student
{
	int num;
	char name[20];
	double score;
};

int main()
{
	student stud1[3]={1001,"Li",78,1002,"Wang",89.5,1004,"Fun",90};
	student stud2[3];
	char c[50];
	
	ostrstream strout(c,50); //建立输出字符串流对象
//	ostrstream strout(c,sizeof(c));
	
	for(int i=0;i<3;i++)
		strout<<stud1[i].num<<" "<<stud1[i].name<<" "<<stud1[i].score<<" ";
	strout<<ends;//ends是C++的I/O操作符,插入一个'\0',等价于 strout<<'\0';
	
	cout<<"array c:"<<endl<<c<<endl<<endl;
	
	istrstream strin(c,50); //建立输入字符串流对象
	
	for(i=0;i<3;i++)
		strin>>stud2[i].num>>stud2[i].name>>stud2[i].score;
	
	cout<<"data from array c to array stud2:"<<endl;
	for(i=0;i<3;i++)
		cout<<stud2[i].num<<" "<<stud2[i].name<<" "<<stud2[i].score<<endl;
	cout<<endl;
	
	return 0;
}