unsignedCharToPrintable
const char *unsignedCharToPrintable(unsigned char c);
fprintf(stderr, "%s", unsignedCharToPrintable(walker[0]));
fprintf(stderr, "%s", unsignedCharToPrintable(walker[0]));
fprintf(stderr, "%s", unsignedCharToPrintable(walker[0]));
const char *const printable = unsignedCharToPrintable(uc);
if (strcmp(unsignedCharToPrintable('A'), "A") != 0)
if (strcmp(unsignedCharToPrintable('\\'), "\\\\") != 0)