Create dz16.1

dz16.1

@@ -0,0 +1,51 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+struct Toy
+{
+  char name[100];
+  int value;
+  int age_from;
+  int age_to;
+};
+
+
+int main()
+{
+   int max_value = 0;
+   FILE *fptr;
+   struct Toy toi;
+
+   if ((fptr = fopen("test.bin","rb")) == NULL)
+   {
+       printf("Error! opening file");
+       exit(1);
+   }
+
+   for(int n = 0; n <= 3; ++n)
+   {
+      fread(&toi, sizeof(struct Toy), 1, fptr);
+    //  printf("%s\t%d grn\tfrom %d to %d yo\n", toi.name, toi.value, toi.age_from, toi.age_to);
+      if (max_value < toi.value)
+      {
+        max_value = toi.value;
+      }
+   }
+   fclose(fptr);
+
+   printf("most expensive toys:\n");
+
+   fptr = fopen("test.bin","rb");
+   for(int n = 0; n <= 3; ++n)
+   {
+      fread(&toi, sizeof(struct Toy), 1, fptr);
+      if ((max_value - toi.value) <= 50)
+      {
+        printf("%s\n", toi.name);
+      }
+    }
+   fclose(fptr);
+
+
+   return 0;
+}