Initialize num.

1 files changed, 1 insertions, 1 deletions

diff --git a/foo.h b/foo.h
index d6bb028..312d839 100644
--- a/foo.h
+++ b/foo.h
@@ -1,6 +1,6 @@
 int usbprintf(USBSerial& usbs, const char* format, ...) {
 	int32_t* argp = (int32_t*)&format;
-	int num;
+	int num = 0;
 	
 	while(*format) {
 		if(*format != '%') {