diff --git a/ChangeLog b/ChangeLog
index 6ce1b95..3077bc6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2024-02-04  Mert Gör  <mertgor@masscollabs.xyz>
+
+	* c-basic/global-variable-scope.c (foo): global variable and local variable explained with two different a variable value 
+
 2024-02-03  Mert Gör  <mertgor@masscollabs.xyz>
 
 	* c-basic/local-variable-global-variable_scope.c (main): local and global variable values are printed
diff --git a/c-basic/global-variable-scope.c b/c-basic/global-variable-scope.c
new file mode 100644
index 0000000..b7667a7
--- /dev/null
+++ b/c-basic/global-variable-scope.c
@@ -0,0 +1,39 @@
+/**
+
+global-variable-scope.c - global variable and their scopes explained 
+   
+Copyright (C) 2023-2024 Mert Gör and contributors
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Feel free to send an email to mertgor@masscollabs.xyz for your questions
+
+ **/
+
+#include <stdio.h>
+
+int a;
+
+void foo(){
+  a = 10;
+}
+
+int main(){
+  a = 30;
+  printf("%d\n", a); /* a is 30*/
+  foo();
+  printf("%d\n", a); /* a is 10*/
+
+  return 0;
+}
diff --git a/c-basic/local-variable-global-variable_scope.c b/c-basic/local-variable-global-variable-scope.c
similarity index 94%
rename from c-basic/local-variable-global-variable_scope.c
rename to c-basic/local-variable-global-variable-scope.c
index a161e96..c197fb9 100644
--- a/c-basic/local-variable-global-variable_scope.c
+++ b/c-basic/local-variable-global-variable-scope.c
@@ -1,6 +1,6 @@
 /**
 
-local-variable-global-cariable_scope.c - local variable and global variable explained 
+local-variable-global-variable-scope.c - local variable and global variable explained 
    
 Copyright (C) 2023-2024 Mert Gör and contributors