diff --git a/c_projects/linker_error_pg/a.h b/c_projects/linker_error_pg/a.h
new file mode 100644
index 0000000..df69349
--- /dev/null
+++ b/c_projects/linker_error_pg/a.h
@@ -0,0 +1,6 @@
+#ifndef A_H
+#define A_H
+
+int x = 42;
+
+#endif
diff --git a/c_projects/linker_error_pg/b.c b/c_projects/linker_error_pg/b.c
new file mode 100644
index 0000000..1545479
--- /dev/null
+++ b/c_projects/linker_error_pg/b.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+#include "b.h"
+
+
+int b_print_x(){
+	printf("b.c: x = %d\n", x);
+}
diff --git a/c_projects/linker_error_pg/b.h b/c_projects/linker_error_pg/b.h
new file mode 100644
index 0000000..edc8cd5
--- /dev/null
+++ b/c_projects/linker_error_pg/b.h
@@ -0,0 +1,4 @@
+#include <stdio.h>
+#include "a.h"
+
+int b_print_x();
diff --git a/c_projects/linker_error_pg/c.c b/c_projects/linker_error_pg/c.c
new file mode 100644
index 0000000..c0a0111
--- /dev/null
+++ b/c_projects/linker_error_pg/c.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+#include "c.h"
+
+
+
+int c_print_x(){
+	printf("c.c: x = %d\n", x);
+}
diff --git a/c_projects/linker_error_pg/c.h b/c_projects/linker_error_pg/c.h
new file mode 100644
index 0000000..4ae5846
--- /dev/null
+++ b/c_projects/linker_error_pg/c.h
@@ -0,0 +1,3 @@
+#include "a.h"
+
+int c_print_x();
diff --git a/c_projects/linker_error_pg/d.c b/c_projects/linker_error_pg/d.c
new file mode 100644
index 0000000..e2abb6d
--- /dev/null
+++ b/c_projects/linker_error_pg/d.c
@@ -0,0 +1,8 @@
+#include  "b.h"
+#include  "c.h"
+
+int main(){
+	b_print_x();
+	c_print_x();
+	return 0;
+}