1 files changed, 30 insertions, 0 deletions
diff --git a/src/stdio/fprintf.c b/src/stdio/fprintf.c
new file mode 100644
index 00000000..053277d7
--- /dev/null
+++ b/src/stdio/fprintf.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include "stdarg.h"
+#include "nonstd/io.h"
+#include "nonstd/internal.h"
+
+/** write formatted output to a file stream **/
+int fprintf(FILE * restrict stream, const char * restrict format, ...)
+{
+	int ret = 0;
+	va_list ap;
+	struct io_options opt = {0};
+	opt.fnname = "fprintf";
+	opt.stream = stream;
+	va_start(ap, format);
+	ret = __printf(&opt, format, ap);
+	va_end(ap);
+	/*
+	RETURN_SUCCESS(the number of characters written);
+	RETURN_FAILURE(NEGATIVE());
+	*/
+	return ret;
+}
+
+/***
+writes a formatted string to ARGUMENT(stream). The format of ARGUMENT(format)
+and the variadic arguments is the same as that for FUNCTION(printf).
+***/
+/*
+STDC(1)
+*/