Mid 1 Bus Problem

#include<iostream>
#include<iomanip>
using namespace std ;
class bus{
private :
string dep,arr ;
int cap,av,id ;
static int c;
public :
bus (): id(c ++),dep ("n/a" ),arr ("n/
a"),cap (0) ,av(0 ){}
~bus (){}
void readdata()
{
cin >>dep >>arr >>cap >>av ;
}
void showdata()
{
cout <<dep <<" "<<arr <<" "<<cap <<"
"<<av <<endl ;
}
int getid ()
{
return id;
}
string getdep ()
{
return dep;
}
string getarr ()
{
return arr;
}
int getcap ()
{
return cap;
}
int getav ()
{
return av;
}
void selltic (int tic) ;
};
void bus :: selltic ( int tic )
{
if (av >= tic )
{
av = av - tic ;
cout << "RESERVATIONS CONFIRMED."
<< endl ;
}
else
cout << "NOT ENOUGH SEATS. TRY
LATER!" << endl ;
}
int findbus (bus B[], int sz, string dep,
string arr )
{
int item ;
for (int i=0 ;i<sz ;i++)
{
if (B[i] .getdep () == dep && B
[i].getarr () == arr)
{
item = i ;
break ;
}
}
return item ;
}
int bus ::c =101;
int main ()
{
int n,i,t,index ;
string a,d;
cout << "Bangla-Indo Joint
Transportation Venture Limited" << endl;
cout << "Phase I : Bus
Registration" <<endl ;
cout << "Enter number of buses: " ;
cin >>n ;
bus B[ n];
for (i= 0;i<n ;i++)
{
cout <<"Enter info of Bus "<< i
+1<<":" ;
B[ i].readdata() ;
}
cout << "Phase II : Tickets
sale" <<endl ;
while ( true)
{
cout <<"Enter Dep. and Arr. city
and tickets: " ;
cin >>d>> a>>t;
if( d == "N/A" && a == "N/A" && t
== 0)
{
break ;
}
else
index = findbus (B,n,d,a );
B[ index ].selltic ( t);
}
cout << right <<setw (6)<< "BUS ID"<< "
"<<left <<setw
(12)<< "DEPARTURE"<< left <<setw
(10)<< "ARRIVAL" <<right <<setw
(10)<< "CAPACITY"<< right <<setw
(12)<< "AVAILABLE"<< endl ;
for (i= 0;i<n ;i++)
{
cout <<right << setw (6)<< B[i]. getid
()<<" "<<left << setw( 12)<< B[i]. getdep
()<<left << setw( 10)<< B[i]. getarr
()<<right << setw (10)<< B[i] .getcap
()<<right << setw (12)<< B[i] .getav ()<< endl;
}
return 0;
}