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C Interview Questions and Answers

Ques. Explain which of the following declarations will compile and what will be constant - a pointer or the value pointed at: * const char *
* char const *
* char * const
Ans. Note: Ask the candidate whether the first declaration is pointing to a string or a single character. Both explanations are correct, but if he says that it?s a single character pointer, ask why a whole string is initialized as char* in C++. If he says this is a string declaration, ask him to declare a pointer to a single character. Competent candidates should not have problems pointing out why const char* can be both a character and a string declaration, incompetent ones will come up with invalid reasons.
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