1 files changed, 35 insertions, 0 deletions
diff --git a/challenge-261/ulrich-rieke/cpp/ch-2.cpp b/challenge-261/ulrich-rieke/cpp/ch-2.cpp
new file mode 100755
index 0000000000..e5a956a286
--- /dev/null
+++ b/challenge-261/ulrich-rieke/cpp/ch-2.cpp
@@ -0,0 +1,35 @@
+#include <iostream>
+#include <vector>
+#include <algorithm>
+#include <string>
+
+std::vector<std::string> split( const std::string & startline ,
+      const std::string & sep ) {
+   std::vector<std::string> separated ;
+   std::string::size_type start { 0 } ;
+   std::string::size_type pos ;
+   do {
+      pos = startline.find_first_of( sep , start ) ;
+      separated.push_back( startline.substr(start , pos - start )) ;
+      start = pos + 1 ;
+   } while ( pos != std::string::npos ) ;
+   return separated ;
+}
+
+int main( ) {
+   std::cout << "Enter some integers, separated by blanks!\n" ;
+   std::string numberline ;
+   std::getline( std::cin , numberline ) ;
+   std::vector<std::string> innumbers { split( numberline , " " ) } ;
+   std::vector<int> numbers ;
+   for ( auto w : innumbers ) 
+      numbers.push_back( std::stoi( w ) ) ;
+   std::cout << "Enter a start number!\n" ;
+   int start ;
+   std::cin >> start ;
+   while ( std::find( numbers.begin( ) , numbers.end( ) , start ) != 
+	 numbers.end( ) ) 
+      start *= 2 ;
+   std::cout << start << '\n' ;
+   return 0 ;
+}