1 files changed, 29 insertions, 0 deletions
diff --git a/challenge-282/ulrich-rieke/cpp/ch-2.cpp b/challenge-282/ulrich-rieke/cpp/ch-2.cpp
new file mode 100755
index 0000000000..e60fe3f932
--- /dev/null
+++ b/challenge-282/ulrich-rieke/cpp/ch-2.cpp
@@ -0,0 +1,29 @@
+#include <iostream>
+#include <string>
+#include <cctype>
+#include <algorithm>
+#include <vector> 
+
+std::string to_lower( std::string aWord ) {
+   std::transform( aWord.begin( ) , aWord.end( ) , aWord.begin( ) , 
+	 tolower ) ;
+   return aWord ;
+}
+
+int main( ) {
+   std::cout << "Please enter an alphabetic word!\n" ;
+   std::string word ;
+   std::cin >> word ;
+   int pos = 0 ;
+   std::vector<std::string> pairs ;
+   while ( pos < word.length( ) - 2 ) {
+      pairs.push_back( word.substr( pos , 2 ) ) ;
+      pairs.push_back( word.substr( pos + 1 , 2 ) ) ;
+      pos += 2 ;
+   }
+   std::transform( pairs.begin( ) , pairs.end( ) , pairs.begin( ) , 
+	 to_lower ) ;
+   std::cout << std::count_if( pairs.begin( ) , pairs.end( ) , []( const
+	    auto & s ) { return s.at( 0 ) != s.at( 1 ) ; }) << '\n' ;
+   return 0 ;
+}