fixes

text.cpp

@@ -42,7 +42,7 @@ void show_histogram(std::vector<size_t> bins) {
                 for (size_t j = 0; j < bins[i]; j++) {
                     std::cout << "*";
                 }
-                std::cout << '/n';
+                std::cout << std::endl;
             }
         }
     }
@@ -77,7 +77,7 @@ void show_histogram(std::vector<size_t> bins) {
                     std::cout << "*";
                 }
             }
-            std::cout << '/n';
+            std::cout << std::endl;
         }
     }
 }