1 files changed, 16 insertions, 0 deletions
diff --git a/src/libc/include/ctype.h b/src/libc/include/ctype.h
new file mode 100644
index 0000000..1ebb111
--- /dev/null
+++ b/src/libc/include/ctype.h
@@ -0,0 +1,16 @@
+#pragma once
+
+int isalnum(int c);
+int isalpha(int c);
+int iscntrl(int c);
+int isdigit(int c);
+int isgraph(int c);
+int islower(int c);
+int isprint(int c);
+int ispunct(int c);
+int isspace(int c);
+int isupper(int c);
+int isxdigit(int c);
+
+int tolower(int c);
+int toupper(int c);