1 files changed, 16 insertions, 8 deletions
diff --git a/main.cpp b/main.cpp
index 0d95196..fb8b8df 100644
--- a/main.cpp
+++ b/main.cpp
@@ -6,6 +6,7 @@
 #include "include/parser.hpp"
 #include "include/expressions.hpp"
 #include "include/exceptions.hpp"
+#include "include/differentiator.hpp"
 
 using std::string, std::cin, std::cout, std::getline, std::vector,
   std::begin, std::end, std::endl;
@@ -13,16 +14,23 @@ using std::string, std::cin, std::cout, std::getline, std::vector,
 int main(){
   string input;
   Parser parser;
-
+  Expression *tree;
+  Expression *differential = NULL;
   getline(cin, input);
 
-  //try {
-  Expression *tree = parser.parse(input);
-  cout << tree->getRepr() << endl;
-    //} catch(const ParserException &e) {
-    //cout << e.showMsg() << endl;
-    //}
-  delete tree;
+  try {
+    tree = parser.parse(input);
+    cout << tree->getRepr() << '\n';
+  } catch(const ParserException &e) {
+    cout << e.showMsg() << endl;
+    tree = NULL;
+  }
+
+  if(tree != NULL) {
+    differential = deriv(tree);
+    delete tree;
+    delete differential;
+  }
   
   return 0;
 }