diff --git a/add.py b/add.py
index d48555d..0ac657a 100644
--- a/add.py
+++ b/add.py
@@ -1,4 +1,5 @@
-a = 11;
+int num;
+a = 11+num20;
 b = 30;
 a+b;
 
diff --git a/class.py b/class.py
index 60d4981..16cf799 100644
--- a/class.py
+++ b/class.py
@@ -1,3 +1,4 @@
 a=2
 b=6
-a=b
\ No newline at end of file
+c=2
+a=b=c
diff --git a/test.py b/test.py
index 5cbe6cb..42e7c76 100644
--- a/test.py
+++ b/test.py
@@ -1,8 +1,8 @@
 
 
-a = 180;
+a = num120+180;
 
 
 
 b= 3;
-print(a+b)
\ No newline at end of file
+print(a+b)