1 files changed, 9 insertions, 0 deletions
diff --git a/userland/libc/stdio/ungetc.c b/userland/libc/stdio/ungetc.c
new file mode 100644
index 0000000..8d649bc
--- /dev/null
+++ b/userland/libc/stdio/ungetc.c
@@ -0,0 +1,9 @@
+#include <stdio.h>
+
+int ungetc(int c, FILE *stream) {
+  if (stream->has_buffered_char)
+    return EOF;
+  stream->buffered_char = c;
+  stream->has_buffered_char = 1;
+  return c;
+}