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2-StudentDB/db.h

+#ifndef __DB_H__
+    #define __DB_H__
+
+// Basic student database record.  Note:
+//  1. id must be > 0.  A student id==0 means the record has been deleted
+//  2. gpa is an int, should be between 0<=gpa<=500, real gpa is gpa/100.0 this
+//     simplifies dealing with floating point types
+//  3. Notice that the student struct was engineered to have a size of
+//     64 bytes.  There are reasons for using such a number
+typedef struct student{
+    int id;
+    char fname[24];
+    char lname[32];
+    int gpa; 
+} student_t;
+
+//Define limits for sudent ids and allowable GPA ranges.  Note GPA values will
+//be stored as integers but printed as floats.  For example a GPA of 450 is really
+//that value divided by 100.0 or 4.50.
+#define MIN_STD_ID      1
+#define MAX_STD_ID      100000
+#define MIN_STD_GPA     0
+#define MAX_STD_GPA     500
+
+//some useful constants you should consider using versus hard coding
+//in your program. 
+static const student_t EMPTY_STUDENT_RECORD = {0};
+static const int STUDENT_RECORD_SIZE  = sizeof(struct student);
+static const int DELETED_STUDENT_ID = 0;
+
+
+#define DB_FILE     "student.db"            //name of database file
+#define TMP_DB_FILE ".tmp_student.db"       //for extra credit
+
+#endif