Better exceptions, investigation on failure to read/print wide chars.

utils_src/readprintwc/readprintwc.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <wchar.h>
+#include <wctype.h>
+
+int main( int argc, char *argv[] ) {
+    fwide( stdin, 1 );
+    fwide( stdout, 1 );
+
+  for (wchar_t c = fgetwc( stdin ); !feof( stdin); c = fgetwc( stdin )) {
+    if (c != '\n') {
+      fwprintf( stdout, L"Read character %d, %C\t", (int)c, c);
+      fputwc( c, stdout);
+      fputws(L"\n", stdout);
+    }
+  }
+}