C Programming Fundamentals

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Multiple Choice

There are some rules for declaring a variable in C language. Which of the following rules is/are not correct for declaring variables?

  1. The variable name cannot start with a digit.
  2. The variables cannot be a C keyword.
  3. They must begin with a character without spaces but underscore is not permitted.
  4. Both 1 and 3.
  5. None of these
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