diff --git a/include/openmc/plot.h b/include/openmc/plot.h
index 346dd0912..da9b33097 100644
--- a/include/openmc/plot.h
+++ b/include/openmc/plot.h
@@ -106,21 +106,20 @@ public:
 //! Add mesh lines to image data of a plot object
 //! \param[in] plot object
 //! \param[out] image data associated with the plot object
-void draw_mesh_lines(Plot pl,
-                     ImageData &data);
+void draw_mesh_lines(Plot pl, ImageData &data);
 
 //! Write a ppm image to file using a plot object's image data
 //! \param[in] plot object
 //! \param[out] image data associated with the plot object
 void output_ppm(Plot pl,
-                const ImageData &data);
+                const ImageData& data);
 
 //! Get the rgb color for a given particle position in a plot
 //! \param[in] particle with position for current pixel
 //! \param[in] plot object
 //! \param[out] rgb color
 //! \param[out] cell or material id for particle position
-void position_rgb(Particle p, Plot pl, RGBColor &rgb, int &id);
+void position_rgb(Particle p, Plot pl, RGBColor& rgb, int& id);
 
 //! Initialize a voxel file
 //! \param[in] id of an open hdf5 file
diff --git a/src/output.cpp b/src/output.cpp
index 0277ec701..79800e21a 100644
--- a/src/output.cpp
+++ b/src/output.cpp
@@ -36,7 +36,7 @@ header(const char* msg, int level) {
 
   // Print header based on verbosity level.
   if (settings::verbosity >= level) {
-    std::cout << out.str() << std::endl << std::endl;
+    std::cout << out.str() << "\n\n";
   }
 }
 
@@ -64,64 +64,64 @@ void print_plot() {
 
   for (auto pl : plots) {
     // Plot id
-    std::cout << "Plot ID: " << pl.id_ << std::endl;
+    std::cout << "Plot ID: " << pl.id_ << "\n";
     // Plot filename
-    std::cout << "Plot file: " << pl.path_plot_ << std::endl;
+    std::cout << "Plot file: " << pl.path_plot_ << "\n";
     // Plot level
-    std::cout << "Universe depth: " << pl.level_ << std::endl;
+    std::cout << "Universe depth: " << pl.level_ << "\n";
 
     // Plot type
     if (PlotType::slice == pl.type_) {
-      std::cout << "Plot Type: Slice" << std::endl;
+      std::cout << "Plot Type: Slice" << "\n";
     } else if (PlotType::voxel == pl.type_) {
-      std::cout << "Plot Type: Voxel" << std::endl;      
+      std::cout << "Plot Type: Voxel" << "\n";      
     }
 
     // Plot parameters
     std::cout << "Origin: " << pl.origin_[0] << " "
               << pl.origin_[1] << " "
-              << pl.origin_[2] << std::endl;
+              << pl.origin_[2] << "\n";
 
     if (PlotType::slice == pl.type_) {
       std::cout << std::setprecision(4)
                 << "Width: "
                 << pl.width_[0] << " "
-                << pl.width_[1] << std::endl;
+                << pl.width_[1] << "\n";
     } else if (PlotType::voxel == pl.type_) {
       std::cout << std::setprecision(4)
                 << "Width: "
                 << pl.width_[0] << " "
                 << pl.width_[1] << " "
-                << pl.width_[2] << std::endl;
+                << pl.width_[2] << "\n";
     }
 
     if (PlotColorBy::cells == pl.color_by_) {
-      std::cout << "Coloring: Cells" << std::endl;
+      std::cout << "Coloring: Cells" << "\n";
     } else if (PlotColorBy::mats == pl.color_by_) {
-      std::cout << "Coloring: Materials" << std::endl;      
+      std::cout << "Coloring: Materials" << "\n";      
     }
     
     if (PlotType::slice == pl.type_) {
       switch(pl.basis_) {
       case PlotBasis::xy:
-        std::cout <<  "Basis: XY" << std::endl;
+        std::cout <<  "Basis: XY" << "\n";
         break;
       case PlotBasis::xz:
-        std::cout <<  "Basis: XZ" << std::endl;
+        std::cout <<  "Basis: XZ" << "\n";
         break;
       case PlotBasis::yz:
-        std::cout <<  "Basis: YZ" << std::endl;
+        std::cout <<  "Basis: YZ" << "\n";
         break;
       }
       std::cout << "Pixels: " << pl.pixels_[0] << " "
-                << pl.pixels_[1] << " " << std::endl;
+                << pl.pixels_[1] << " " << "\n";
     } else if (PlotType::voxel == pl.type_) {
       std::cout << "Voxels: " << pl.pixels_[0] << " "
                 << pl.pixels_[1] << " "
-                << pl.pixels_[2] << std::endl;
+                << pl.pixels_[2] << "\n";
     }
 
-    std::cout << std::endl;
+    std::cout << "\n";
     
   }
 }
diff --git a/src/plot.cpp b/src/plot.cpp
index 69e7d9e32..f27832486 100644
--- a/src/plot.cpp
+++ b/src/plot.cpp
@@ -756,9 +756,9 @@ void output_ppm(Plot pl, const ImageData &data)
   of.open(fname);
 
   // Write header
-  of << "P6" << std::endl;
-  of << pl.pixels_[0] << " " << pl.pixels_[1] << std::endl;
-  of << "255" << std::endl;
+  of << "P6" << "\n";
+  of << pl.pixels_[0] << " " << pl.pixels_[1] << "\n";
+  of << "255" << "\n";
   of.close();
 
   of.open(fname, std::ios::binary | std::ios::app);
@@ -773,7 +773,7 @@ void output_ppm(Plot pl, const ImageData &data)
   }
   // Close file
   // THIS IS HERE TO MATCH FORTRAN VERSION, NOT TECHNICALLY NECESSARY
-  of << std::endl;
+  of << "\n";
   of.close();
 }
 
diff --git a/src/progress_bar.cpp b/src/progress_bar.cpp
index f412793c9..44a7e2496 100644
--- a/src/progress_bar.cpp
+++ b/src/progress_bar.cpp
@@ -11,22 +11,15 @@
 
 #define BAR_WIDTH 72
 
-#ifdef UNIX
-int check_isatty(int fd) {
-  return isatty(fd);
-}
-#endif
-
 bool is_terminal() {
 #ifdef UNIX
-  return check_isatty(STDOUT_FILENO) != 0;
+  return isatty(STDOUT_FILENO) != 0;
 #else
   return false;
 #endif
 }
 
 ProgressBar::ProgressBar() {
-  bar = "";
   // initialize bar
   set_value(0.0);
 }