 The C operator precedence is not always intuitive.For example, the operator codice_155 binds more tightly than (is executed prior to) the operators codice_9 (bitwise AND) and codice_148 (bitwise OR) in expressions such as codice_181, which must be written as codice_182 if that is the coder's intent.The "hello, world" example, which appeared in the first edition of "K&R", has become the model for an introductory program in most programming textbooks.