#include <stdio.h>
typedef enum{FALSE,TRUE}boolian;
typedef char string[30];
typedef struct
{
string name;
int cita;
boolian state;
}student;
int main(void)
{
	student stu;
	FILE *fp,*fp2;
	int not_over=1;
	fp=fopen("Students.dat","w+t");
	
	while(not_over)
	{
		printf("name:\n");
		scanf("%s",stu.name);
		printf("class:\n");
		scanf("%d",&stu.cita);
		printf("\n");
		stu.state=TRUE;
		//write to students
		fwrite(&stu,sizeof(student),1,fp);
		printf("\nput 0 to end it:\n");
		scanf("%d",% not_over);
	}
	printf("-------------------\n before scaning \n -------------------\n");
	fseek(fp,0,SEEK_SET);
	while(!feof(fp))
	{
		fread(&stu,sizeof(student),1,fp);
		printf("name: %s\n",stu.name);
		printf("class: %d\n",stu.cita);
		printf("state: %d\n",stu.state);
	}
	
	fclose(fp);
	printf("-------------------\n after scaning \n -------------------\n");
	fp=fopen("Students.dat","r+t");
	fp2=fopen("Bogrim.dat","w+t");
	while(!feof(fp))
	{
		fread(&stu,sizeof(student),1,fp);
		if(stu.cita>=2)
		{
			stu.state=FALSE;
			fseek(fp,-1 * sizeof(student),SEEK_CUR);
			fwrite(&stu,sizeof(student),1,fp);
			fwrite(&stu,sizeof(student),1,fp2);
		}
	}
	printf("-------------------\n students.dat \n -------------------\n");
	fseek(fp,0,SEEK_SET);
	while(!feof(fp))
	{
		fread(&stu,sizeof(student),1,fp);
		printf("name: %s\n",stu.name);
		printf("class: %d\n",stu.cita);
		printf("state: %d\n",stu.state);
	}
	printf("-------------------\n bogrim.dat \n -------------------\n");
	fseek(fp2,0,SEEK_SET);
	while(!feof(fp2))
	{
		fread(&stu,sizeof(student),1,fp2);
		printf("name: %s\n",stu.name);
		printf("class: %d\n",stu.cita);
		printf("state: %d\n",stu.state);
	}
	fclose(fp);
	fclose(fp2);
return 0;
}

	printf("-------------------\n before scaning \n -------------------\n");
	fseek(fp,0,SEEK_SET);
	while(!feof(fp))
	{
		fread(&stu,sizeof(student),1,fp);
		printf("name: %s\n",stu.name);
		printf("class: %d\n",stu.cita);
		printf("state: %d\n",stu.state);
	}

printf("-------------------\n after scaning \n -------------------\n");
	fp=fopen("Students.dat","r+t");
	fp2=fopen("Bogrim.dat","w+t");
	while(!feof(fp))
	{
		fread(&stu,sizeof(student),1,fp);
		if(stu.cita>=2)
		{
			stu.state=FALSE;
			fseek(fp,-1 * sizeof(student),SEEK_CUR);
			fwrite(&stu,sizeof(student),1,fp);
			fwrite(&stu,sizeof(student),1,fp2);
		}
	}