A program to create a file and enter data from the user in C

#include <stdio.h>
#include <stdlib.h>
  
int main()
{
   char str[1000];
   FILE *fptr;
   fptr=fopen("test.txt","w");	
   if(fptr==NULL)
   {
      printf("Error in opening file!");
      exit(1);
   }
   printf("Input a sentence to the file:");
   fgets(str, sizeof str, stdin);
   fprintf(fptr,"%s",str);
   fclose(fptr);
   printf("\n Data stored successfully\n");
   return 0;
}