The invalid C variable name among the options is d) int $main;

In C, variable names must start with a letter (a-z, A-Z) or an underscore (_). They can contain letters, numbers, and underscores. However, they cannot contain special characters like $. Therefore, "$main" is not a valid variable name in C.

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The invalid C variable name among the options is d) int $main;

In C, variable names must start with a letter (a-z, A-Z) or an underscore (_). They can contain letters, numbers, and underscores. However, they cannot contain special characters like $. Therefore, "$main" is not a valid variable name in C.

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The invalid C variable name among the options is d) int $main;

In C, variable names must start with a letter (a-z, A-Z) or an underscore (_). They can contain letters, numbers, and underscores. However, they cannot contain special characters like $. Therefore, "$main" is not a valid variable name in C.

Which of the following is not a valid C variable name?Answer areaa) int number;b) float rate;c) int variable_count;d) int $main;

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