Update header.h

header.h

+#ifndef HEADER_H
 #define HEADER_H
 
-#include <stdlib.h>
-#include <stdio.h>
+#define MAX_AUTOS 5
+#define MAX_OWNERS 5
 
-typedef struct 
-{
-	char 	mark[256];
-	char	mudel[256]; 
-	char 	numbrimark[6]; 
-	int 	valjalaskeaasta; 
-	char	kubatuur[256];
-}autod;
+typedef struct {
+    char mark[20];
+    char model[20];
+    char license_plate[20];
+    int year;
+    char engine_size[20];
+} Auto;
 
-typedef struct 
-{
-	char	inimeseisikukood[31];
-	char	nimi[31];
-}isik;
-
-int kontrollifail(FILE *);
-
-int voimsam ();
-int koigevanem ();
-int koigeuuem ();
+typedef struct {
+    char id[20];
+    char name[20];
+} Owner;
 
+void load_autos(Auto *autos);
+void load_owners(Owner *owners);
+void find_most_powerful_car(Auto *autos);
+void find_oldest_car(Auto *autos);
+void find_newest_car(Auto *autos);
 
+#endif