Can't write to Binary File C++ - c++98

Question

So , I am currently Doing an project where i need to create a file to store contacts , read them , modify .....
Everything was working perfectly but after a few days once i opened and ran the file again it screwed up everything it just wont write the file
once i write the file , all i get is 100 blank spaces and i know why 100 becuase each data member in my class is 20 and therefore i have 5 so 5x20=100
But i dont knoq why this is not writing NOTE: This was working perfectly before
,also i tried many things but it dosnt want to write....
code:
void contacts::createnew()
{
ofstream fout;
fout.open("contacts.c",ios::binary||ios::out);
input();
display();
fout.write( (char*) &c, sizeof(c));
fout.close();
view();
cout<<fout.good()<<fout.bad()<<fout.fail();
}
class contacts
{
private:
char name[20];
addline_1[20];
addline_2[20];
email_id[20];
char ph_no[10];
mob_no[10];
public:
void init();
//get contacts details by input
void input()
{
// Implementation here...
}
void display()
{
// Implementation here...
}
void createnew();
void view();
}