diff --git a/src/main.cpp b/src/main.cpp
index d13cccd..9d835b0 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -123,7 +123,7 @@ int main(int, char *argv[]) {
         throw_debug("IO", "program: '" + program + "'\n");
         file.close();
 
-        display_config();
+        //display_config();
         
         // Parse and execute the program.
         execute(program);
diff --git a/src/parser/pemdas.cpp b/src/parser/pemdas.cpp
index 3c324a6..29a7af7 100644
--- a/src/parser/pemdas.cpp
+++ b/src/parser/pemdas.cpp
@@ -537,6 +537,8 @@ result<Expression> parse_pemdas(string str, int order) {
                     base.value = new TrueExp;
                 else if (var == "false")
                     base.value = new FalseExp;
+                else if (var == "input")
+                    base.value = new InputExp;
                 else if (var == "void")
                     base.value = new VoidExp;
                 else if (var == "sin") {