1 files changed, 33 insertions, 0 deletions
diff --git a/challenge-192/ulrich-rieke/cpp/ch-1.cpp b/challenge-192/ulrich-rieke/cpp/ch-1.cpp
new file mode 100644
index 0000000000..f4ca6ba3bb
--- /dev/null
+++ b/challenge-192/ulrich-rieke/cpp/ch-1.cpp
@@ -0,0 +1,33 @@
+#include <iostream>
+#include <cstdlib>
+#include <algorithm>
+#include <vector>
+
+int main( int argc , char * argv[] ) {
+  if ( argc != 2 ) {
+      std::cerr << "usage : <programname> <positive integer>\n" ;
+      return 1 ;
+  }
+  int number = std::atoi( argv[ 1 ] ) ;
+  std::vector<int> binaryDigits ;
+  while ( number != 0 ) {
+      binaryDigits.push_back( number % 2 ) ;
+      number /= 2 ;
+  }
+  std::reverse( binaryDigits.begin( ) , binaryDigits.end( ) ) ;
+  for ( int i = 0 ; i < binaryDigits.size( ) ; i++ ) {
+      if ( binaryDigits[ i ] == 0 )
+    binaryDigits[ i ] = 1 ;
+      else
+    binaryDigits[ i ] = 0 ;
+  }
+  std::reverse( binaryDigits.begin( ) , binaryDigits.end( ) ) ;
+  int sum = 0 ;
+  int multiplier = 1 ;
+  for ( int n : binaryDigits ) {
+      sum += n * multiplier ;
+      multiplier *= 2 ;
+  }
+  std::cout << sum << std::endl ;
+  return 0 ;
+}