#include<stdio.h>
int ghiFile(char *FlieName,int m)
{
	FILE *f=fopen(FlieName,"wt");
	if(f==NULL) return 0;
	int tongUS=0;
	for(int j=6;j<m;j++)
	{
		for(int i=1;i<j;i++)
			if(j%i==0)
				tongUS+=i;
		if(j==tongUS)
		{
			fprintf(f,"%d  ",j);
		}
		tongUS=0;
	}
	fclose(f);
	return 1;
}
int docFile(char *FlieName,int &m)
{
	FILE *f=fopen(FlieName,"r");
	if(f==NULL)
	return 0;
	fscanf(f,"%d",&m);
	fclose(f);
	return 1;
}
void main()
{
	int m;
	int kq=docFile("D:/data.in",m);
	if(kq==0)
		printf("\n loi doc file");
	else
		printf("\n doc flie thanh cong");
	printf("\n");
	kq=ghiFile("D:/data.out",m);
	if(kq==0)
		printf("\n loi ghi file");
	else
		printf("\n ghi flie thanh cong");
	printf("\n");
}