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#include <algorithm>
#include <iterator>
#include <iostream>
#include <cstring>
#include "predicates.h"
using namespace std;
//CONTAINS
class Contains
{
string d_target;
size_t d_count;
public:
Contains(char const *target)
:
d_target(target),
d_count(0)
{}
bool operator()(string const &str)
{
d_count++;
return str.find_first_of(d_target) != string::npos;
}
bool operator()(string const &s1, string const &s2)
{
d_count++;
return s1.find_first_of(s2) != string::npos;
}
size_t count() const
{
return d_count;
}
};
//=
//MAIN
int main(int argc, char **argv)
{
Contains contains{ "aeiou" };
if (argc == 1)
cout << "Counted " <<
count_if(istream_iterator<string>{ cin },
istream_iterator<string>{},
PredicateObject1<Contains, string>{contains}
) << " words containing vowels ";
else
cout << "Counted " <<
count_if(istream_iterator<string>{ cin },
istream_iterator<string>{},
[&](string const &target)
{
return PredicateObject2<Contains, string>
{ contains }(target, "aeiou");
}
) << " words containing vowels ";
cout << "(read " << contains.count() << " strings)\n";
}
/*
Generated output after executing (predobj.cc being this soure file)
a.out < predobj.cc
or
a.out 2 < predobj.cc
Counted 107 words containing vowels (read 163 strings)
*/
//=
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