My copy of K&R disagrees with you that implicit conversion didn’t exist in C. See section 2.7 “Type conversions”. “Implicit arithmetic conversions work muc

My copy of K&R disagrees with you that implicit conversion didn’t exist in C. See section 2.7 “Type conversions”. “Implicit arithmetic conversions work much as expected. In general, if an operator like + or * that takes two operands (a binary operator) has operands of different types, the ``lower'' typekis promoted to the ``higher'' type before the operation proceeds.” It goes on including giving a table of all the conversions and a set of heuristics which normally apply.