void find();
void searchmenu();  
void managemenu();  
void readOut();
void creatfile();
void readcustomer();  
int comptime();
error C2660: 'readcustomer' : function does not take 1 parameters
error C2664: 'readOut' : cannot convert parameter 1 from 'struct Flight [20]' to 'struct node
catspeake