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C Programming Questions and Answers – Character Class Testing & Conversions

C Programming Questions and Answers – Character Class Testing & Conversions   1.Which of the following library function is not case-sensitive? a) toupper() b) tolower() c) isdigit() d) All of the mentioned 2.The following expression can be substituted for. if (isalpha(c) && isdigit(c)) a) if (isalnum(c)) b) if (isalphanum(c)) c) …

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