Labels:dialog box | sky OCR: Ask DOS to read the xeu character from the standard input (requires one int instruction per character Nc Did we get character? Done Yes Convert character to uppercase f it's lowercase Ask DOS o write the character which is now quar anteed to be non- lowercase, to the standard output (requires one int instruction per character FIGURE 14.3 It's casiest -but not fastest communicatc with DOS one charac ter a time letting DOS handle the details ot buffering data guaranteed chara
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