Qus निम्नलिखित में से कौन identifiers में इस्तेमाल नहीं किया जा सकता है?
A. Spaces
B. Digits
C. Underscores
D. Letters
Solution
A. SpacesExplanation
An Identifier can only have alphanumeric characters(a-z , A-Z , 0-9) and underscore( _ ). The first character of an identifier can only contain alphabet(a-z , A-Z) or underscore ( _ ). Identifiers are also case sensitive in C. For example name and Name are two different identifiers in C.