FILE HANDLING- USE OF FPRINTF & FSCANF

#include<conio.h>
#include<stdio.h>
void main()
{
  FILE *fp1;
  typedef struct student
  {
  char name[20];
  int age;
  }stu;
  stu s1;
  int i,n;
  clrscr();
  fp1=fopen("stu.txt","w");
  if(fp1==NULL)
  {
printf("file creation error\n");
getch();
exit(1);
  }
  printf("enter the no of students\n");
  scanf("%d",&n);
  for(i=0;i<n;i++)
  {
printf("enter the name and age\n");
scanf("%s%d",s1.name,&s1.age);
fprintf(fp1,"%s %d\n",s1.name,s1.age);
  }
  fclose(fp1);

  fp1=fopen("stu.txt","r");
  if(fp1==NULL)
  {
printf("file does not exist\n");
getch();
exit(1);
  }
  else
  {
  while((fscanf(fp1,"%s%d",s1.name,&s1.age))!=EOF)
{
printf("name=%s age=%d\n",s1.name,s1.age);
}
  }
  fclose(fp1);
  getch();
}