PracticeDev/study_cpp/cpp_primer_source_code/Chapter 15/sales.cpp

73 lines
1.5 KiB
C++

// sales.cpp -- Sales implementation
#include "sales.h"
using std::string;
Sales::bad_index::bad_index(int ix, const string & s )
: std::logic_error(s), bi(ix)
{
}
Sales::Sales(int yy)
{
year = yy;
for (int i = 0; i < MONTHS; ++i)
gross[i] = 0;
}
Sales::Sales(int yy, const double * gr, int n)
{
year = yy;
int lim = (n < MONTHS)? n : MONTHS;
int i;
for (i = 0; i < lim; ++i)
gross[i] = gr[i];
// for i > n and i < MONTHS
for ( ; i < MONTHS; ++i)
gross[i] = 0;
}
double Sales::operator[](int i) const
{
if(i < 0 || i >= MONTHS)
throw bad_index(i);
return gross[i];
}
double & Sales::operator[](int i)
{
if(i < 0 || i >= MONTHS)
throw bad_index(i);
return gross[i];
}
LabeledSales::nbad_index::nbad_index(const string & lb, int ix,
const string & s ) : Sales::bad_index(ix, s)
{
lbl = lb;
}
LabeledSales::LabeledSales(const string & lb, int yy)
: Sales(yy)
{
label = lb;
}
LabeledSales::LabeledSales(const string & lb, int yy, const double * gr, int n)
: Sales(yy, gr, n)
{
label = lb;
}
double LabeledSales::operator[](int i) const
{ if(i < 0 || i >= MONTHS)
throw nbad_index(Label(), i);
return Sales::operator[](i);
}
double & LabeledSales::operator[](int i)
{
if(i < 0 || i >= MONTHS)
throw nbad_index(Label(), i);
return Sales::operator[](i);
}