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Multiple Choice

Which of the following statements is not true?

  1. getchar() reads one character at a time till the user presses enter.
  2. putchar() prints one character on the screen at a time, read by the standard input.
  3. getch() reads alphanumeric character from the input device.
  4. getch() does not display the character input by it on the screen.
  5. All of the above
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