which of the following is not a valid C variable name ??
a)var123
b) var_123
c) 123var
d) X_123_var
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Answer:
Option (C) 123var is not a valid C variable name.
Explanation:
For naming a C variable, capital letters, small letters, underscore, and even numbers can be used. However, the variable name cannot start with numbers and hence, 123var is incorrect. The first character of a variable name should be either an alphabet or underscore.
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Explanation:
Answer the following questions
Which of the following is true for variable names in C?
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