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Qus : Which of the following is not a valid C variable name?
Qus निम्नलिखित में से कौन सी एक मान्य C variable नाम नहीं है?

A. int number;
B. float rate;
C. int variable_count;
D. int $main;


Solution
D. int $main;



Explanation
Since only underscore and no other special character is allowed in a variable name, it results in an error


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