All of the above
---------------------------------
#include
Program: using namespace std;
string createPurchaseOrder0;
int main(
{
cout<return 0;
}
string createPurchaseOrder(
{
int qty;
double costPerltem;
string description,info="":
cout<<"Enter Quantity:
cin>>qty;
cout<<"Enter cost per item: "
cin>>costPerltem;
cout<<"Enter Description: "
cin>>description;
if(qty<0 I| costPerltem<0
Idescription.compare(''"')==0)
cout<<'InThe entered data is invalid!":
info="":
else
"
cout<<"'InThe entered data is valid!":
info=info+"'(nQuantity: "+to_string (qty) +" In";
info=info+"Cost per item:
"†to_string (costPerltem)+"In";
info=info+"Description: "description+" In";
return info;
Output:
Solution :
a.
public Book(
, String author, 
, int 
) {
this.
= ;
this.
= ;
this.
= ;
this. = ;
b). 
getTitle() {
return ;
}
setTitle() {
this. = ;
}
getAuthor() {
return author;
}
setAuthor(String author) {
this. = ;
}
getPublisher() {
return ;
}
setPublisher(String ) {
this. =;
}
public int get() {
return ;
}
set(int ) {
this. = ;
}
