Add more code

Add some funcitons to work with variables, add more instructions and add
ability to stop the code from `ccl_instruction`

1 files changed, 5 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 45742b9..f3d53ea 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,11 +13,16 @@ add_executable(
     src/instruction/pushzero.c
     src/instruction/increment.c
     src/instruction/decrement.c
+    src/instruction/add.c
+    src/instruction/subtract.c
+    src/instruction/reverse.c
     src/main.c
     src/platform/getch.c
+    src/readchar.c
     src/readfile.c
     src/stack.c
     src/utils.c
+    src/variable.c
 )
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON CACHE INTERNAL "")