[AED] Update setup.sh

Signed-off-by: TiagoRG <tiago.rgarcia@ua.pt>

2ano/1semestre/aed/setup.sh

@@ -1,5 +1,8 @@
 #!/bin/bash
 
+parent_path=$( cd "$(dirname "${BASH_SOURCE[0]}")" || exit ; pwd -P )
+cd "$parent_path" || exit
+
 if [ $# -ne 1 ]; then
     echo "Usage: $0 <source file>"
     exit 1
@@ -22,4 +25,9 @@ fi
 
 gcc -Wall -Wextra -Werror -g -o "out/$out_dirname/${out_basename%.*}" "$1" -lm
 
+if [ $? -ne 0 ]; then
+    echo "Compilation failed"
+    exit 1
+fi
+
 out/"$out_dirname"/"${out_basename%.*}"