diff --git a/01_ENV/build-c.sh b/01_ENV/build-c.sh
index 218240c..88ed7a4 100755
--- a/01_ENV/build-c.sh
+++ b/01_ENV/build-c.sh
@@ -1,3 +1,4 @@
+#!/usr/bin/env bash
 bash clean.sh
 clang-6.0 -c func1.c main.c -lm
 clang-6.0 -s func1.o main.o
diff --git a/01_ENV/func1.c b/01_ENV/func1.c
index fb45c6a..0dc0564 100644
--- a/01_ENV/func1.c
+++ b/01_ENV/func1.c
@@ -4,8 +4,7 @@
 #define func1
 
 int func3(int x) {
-    //return pow(x, 3) - 3 * pow(x, 2) - x + 3;
-    return x + 10;
+    return pow(x, 3) - 3 * pow(x, 2) - x + 3;
 }
 
 int func2(int x) {
@@ -25,4 +24,4 @@ int recurse2(int count) {
          printf("Recurse 2: %d\n", func3(count - 1));
          return recurse1(count - 1);
     }else return 0;
-}
+}
\ No newline at end of file
diff --git a/01_ENV/main.c b/01_ENV/main.c
index 5ed484e..90fdc1b 100644
--- a/01_ENV/main.c
+++ b/01_ENV/main.c
@@ -19,7 +19,7 @@ int main(int argc, char **argv) {
   printf("Funktion 1: %d\n" ,func3(2));
   printf("Funktion 2: %d\n" , func2(2));
 
-  
+
   int tmp = 0;
   for(int i = 0; i <= 5; ++i) {
       tmp += func3(i);