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lang-c
&pmessagewill be the address ofpmessage, somewhere on the stack. Likewise,&amessagewill be the address of the array on the stack, same asamessage. However,&amessagehas a different type thanamessage.&pmessageischar**- pointer to pointer to char, and the type of&amessageischar(*)[16]- pointer to array of 16 chars. Those two types are not compatible (the second one, in particular, is simply address of the first character in the string, while the first one is address of variable that stores the address of the first character).