#include <iostream>
#include <string>
#include <vector>
using namespace std;
class Location {
friend ostream& operator<<( ostream&, const Location& );
public:
Location( int line, int col )
: _line( line ), _col( col ) {}
private:
short _line;
short _col;
};
class WordCount {
friend ostream& operator<<( ostream&, const WordCount& );
friend istream& operator>>( istream&, WordCount& );
public:
WordCount() {}
WordCount( string word ) : _word( word ) {}
WordCount( string word, int ln, int col )
: _word( word ){ insert_location( ln, col ); }
string word() const { return _word; }
int occurs() const { return _occurList.size(); }
void found( int ln, int col )
{ insert_location( ln, col ); }
private:
void insert_location( int ln, int col )
{ _occurList.push_back( Location( ln, col )); }
string _word;
vector< Location > _occurList;
};
ostream& operator <<( ostream& os, const Location& lc )
{
// output of a Loc object: < 10,37 >
os << "<" << lc._line
<< "," << lc._col << "> ";
return os;
}
ostream&
operator <<( ostream& os, const WordCount& wd )
{
os << "<" << wd._occurList.size() << "> "
<< wd._word << endl;
int cnt = 0, onLine = 6;
vector<Location>::const_iterator first = wd._occurList.begin();
vector<Location>::const_iterator last = wd._occurList.end();
for ( ; first != last; ++first )
{
// os << Location
os << *first << " ";
// formatting: 6 to a line
if ( ++cnt >= onLine )
{ os << "\n"; cnt = 0; }
}
return os;
}
int main()
{
WordCount search( "rosebud" );
// for simpilicity, hand code 8 occurrences
search.found(11,3); search.found(11,8);
search.found(14,2); search.found(34,6);
search.found(49,7); search.found(67,5);
search.found(81,2); search.found(82,3);
search.found(91,4); search.found(97,8);
cout << "Occurrences: " << "\n"
<< search << endl;
return 0;
}
输出结果应该是这样的:
/**
**
Occurrences:
<10> rosebud
<11,3> <11,8> <14,2> <34,6> <49,7> <67,5>
<81,2> <82,3> <91,4> <97,8>
**
**/
编译时8个报错
-------------------Configuration: test - Win32 Debug--------------------
Compiling...
test.cpp
d:\test\test.cpp(44) : error C2248: '_line' : cannot access private member declared in class 'Location'
d:\test\test.cpp(13) : see declaration of '_line'
d:\test\test.cpp(44) : error C2248: '_col' : cannot access private member declared in class 'Location'
d:\test\test.cpp(14) : see declaration of '_col'
d:\test\test.cpp(52) : error C2248: '_occurList' : cannot access private member declared in class 'WordCount'
d:\test\test.cpp(37) : see declaration of '_occurList'
d:\test\test.cpp(53) : error C2248: '_word' : cannot access private member declared in class 'WordCount'
d:\test\test.cpp(36) : see declaration of '_word'
d:\test\test.cpp(56) : error C2248: '_occurList' : cannot access private member declared in class 'WordCount'
d:\test\test.cpp(37) : see declaration of '_occurList'
d:\test\test.cpp(57) : error C2248: '_occurList' : cannot access private member declared in class 'WordCount'
d:\test\test.cpp(37) : see declaration of '_occurList'
d:\test\test.cpp(62) : error C2593: 'operator <<' is ambiguous
d:\test\test.cpp(84) : error C2593: 'operator <<' is ambiguous
Error executing cl.exe.
test.exe - 8 error(s), 0 warning(s)
