C++ > Visual C++ 5.0 Standard C++ Library sample source codes

 Set symmetric difference - Creates a sorted set of elements in the first set,

Set symmetric difference - Creates a sorted set of elements in the first set, set_symmetric_difference Header <algorithm> template<class InputIterator1, class InputIterator2, class OutputIterator> OutputIterator set_symmetric_difference(InputIterator1 first1, InputIterator1 last1, InputIterator first2, InputIterator2 last2, OutputIterator result) Creates a sorted set of elements in the first set, but not the second and all elements in the second set but not the first. The first set is represented by the range [first1, last1). The second set is represented by the range [first2, last2). The resulting set is placed in the range starting at result. The non-predicate version uses operator< for comparison. template<class InputIterator1, class InputIterator2, class OutputIterator, class BinaryPredicate> OutputIterator set_symmetric_difference(InputIterator1 first1, InputIterator1 last1, InputIterator first2, InputIterator2 last2, OutputIterator result, BinaryPredicate pr) Creates a sorted set of elements in the first set, but not the second and all elements in the second set but not the first. The first set is represented by the range [first1, last1). The second sequence is represented by the range [first2, last2). The resulting set is placed in the range starting at result. The predicate version uses the predicate function pr for comparison. Sample #pragma warning(disable : 4786) #include <algorithm> #include <iostream> #include <functional> #include <cstring> int main() { char *Alphabet = "abcdefghijklmnopqrstuvwxyz" ; char *Vowels = "aeiou" ; char *AlphaNum = "1234567890abcdef" ; char result[45] ; char *last ; int lenA = strlen(Alphabet) ; int lenV = strlen(Vowels) ; int lenAN = strlen(AlphaNum) ; std::cout << "Alphabet = " << Alphabet << std::endl ; std::cout << "\nVowels = " << Vowels << std::endl ; std::cout << "\nAlphaNum = " << AlphaNum << std::endl ; std::cout << "\n\nusing non-predicate versions" << std::endl ; //non-predicate set_difference last = std::set_difference(Alphabet, Alphabet+lenA, AlphaNum, AlphaNum+lenAN, result) ; *last = 0 ; std::cout << "\nset_difference(Alphabet, AlphaNum) = " << result << std::endl ; //non-predicate set_intersection last = std::set_intersection(Alphabet, Alphabet+lenA, AlphaNum, AlphaNum+lenAN, result) ; *last = 0 ; std::cout << "\nset_intersection(Alphabet, AlphaNum) = " << result << std::endl ; //non-predicate set_symmetric_difference last = std::set_symmetric_difference(Alphabet, Alphabet+lenA, Vowels, Vowels+lenAN, result) ; *last = 0 ; std::cout << "\nset_symmetric_difference(Alphabet, Vowels) = " << result << std::endl ; //non-predicate set_union last = std::set_union(Alphabet, Alphabet+lenA, AlphaNum, AlphaNum+lenAN, result) ; *last = 0 ; std::cout << "\nset_union(Alphabet, AlphaNum) = " << result << std::endl ; std::cout << "\n\nusing predicate versions" << std::endl ; //predicate set_difference last = std::set_difference(Alphabet, Alphabet+lenA, AlphaNum, AlphaNum+lenAN, result, std::less<char>()) ; *last = 0 ; std::cout << "\nset_difference(Alphabet, AlphaNum) = " << result << std::endl ; //predicate set_intersection last = std::set_intersection(Alphabet, Alphabet+lenA, AlphaNum, AlphaNum+lenAN, result, std::less<char>()) ; *last = 0 ; std::cout << "\nset_intersection(Alphabet, AlphaNum) = " << result << std::endl ; //predicate set_symmetric_difference last = std::set_symmetric_difference(Alphabet, Alphabet+lenA, Vowels, Vowels+lenAN, result, std::less<char>()) ; *last = 0 ; std::cout << "\nset_symmetric_difference(Alphabet, Vowels) = " << result << std::endl ; //predicate set_union last = std::set_union(Alphabet, Alphabet+lenA, AlphaNum, AlphaNum+lenAN, result, std::less<char>()) ; *last = 0 ; std::cout << "\nset_union(Alphabet, AlphaNum) = " << result << std::endl ; return 0 ; } Program Output Alphabet = abcdefghijklmnopqrstuvwxyz Vowels = aeiou AlphaNum = 1234567890abcdef using non-predicate versions set_difference(Alphabet, AlphaNum) = ghijklmnopqrstuvwxyz set_intersection(Alphabet, AlphaNum) = abcdef set_symmetric_difference(Alphabet, Vowels) = bcdfghjklmnpqrst set_union(Alphabet, AlphaNum) = 1234567890abcdefghijklmnopqrstuvwxyz using predicate versions set_difference(Alphabet, AlphaNum) = ghijklmnopqrstuvwxyz set_intersection(Alphabet, AlphaNum) = abcdef set_symmetric_difference(Alphabet, Vowels) = bcdfghjklmnpqrst set_union(Alphabet, AlphaNum) = 1234567890abcdefghijklmnopqrstuvwxyz



Privacy Policy | Link to Us | Links