Need help with reading/writing dat file with struct !

[Etsho]

Hello Guys ,

Iam new in c++ coding , so i want you to help to find a solution for this.

I need to read and write to the dat file using this struct:

typedef struct contact
{ 	
 char first[100]; 	
 char last[100]; 	
 char phone[50]; 
}contact;

Thanks