1 files changed, 31 insertions, 0 deletions
diff --git a/challenge-110/ulrich-rieke/cpp/ch-1.cpp b/challenge-110/ulrich-rieke/cpp/ch-1.cpp
new file mode 100644
index 0000000000..173a01075e
--- /dev/null
+++ b/challenge-110/ulrich-rieke/cpp/ch-1.cpp
@@ -0,0 +1,31 @@
+#include <iostream>
+#include <string>
+#include <regex>
+#include <fstream>
+#include <vector>
+
+int main( int argc, char * argv[] ) {
+  if ( argc != 2 ) {
+      std::cerr << "Error! syntax challenge110 <inputfile>!\n" ;
+      return 1 ;
+  }
+  const char* const infile = argv[1] ;
+  std::ifstream myIn( infile , std::ios_base::in ) ;
+  if ( ! myIn.is_open( ) ) {
+      std::cerr << "error opening " << infile << '\n' ;
+      return 2 ;
+  }
+  std::vector<std::string> validLines ;
+  std::string regexstr(R"((\s*\+\d{2}|\(\d{2}\)|\d{4})\s\d{10})") ;
+  std::regex rgx( regexstr ) ;
+  while ( myIn ) {
+      std::string line ;
+      std::getline( myIn , line ) ;
+      if ( std::regex_search( line , rgx ) )
+    validLines.push_back( line ) ;
+  }
+  myIn.close( ) ;
+  for ( auto s : validLines )
+      std::cout << s << std::endl ;
+  return 0 ;
+}