c++文件写入模板

#include
#include
#include
#include
#include

using namespace std;
int main()
{
	int t;
	t=20;
	unsigned seed;
	seed=time(0);
	srand(seed);
	while(t--)
	{
		ofstream file;
		ostringstream s1;
		s1<<t+1;
		string s2=s1.str();
		string s="in"+s2+".in";
		file.open(s);


		/*-------------数据输入-----------------*/

		file<<"hello world"<<endl;

		/*-------------输入结束-----------------*/
	}


}