In some instances, such packages may exhibit undefined behavior. Even when a program is properly-outlined inside a language, it might nonetheless have a meaning that is not supposed by the one who wrote it. The syntax of a language describes the potential combinations of symbols that type a syntactically appropriate program. The which means given to a mixture of symbols is handled by semantics (either formal or onerous-coded in a reference implementation). Since most languages are textual, this text discusses textual syntax.
In distinction, an untyped language, corresponding to most meeting languages, permits any operation to be performed on any information, typically sequences of bits of various lengths. High-degree untyped languages embrace BCPL, Tcl, and some kinds of Forth. Not all syntactically right applications are semantically correct. Many syntactically correct applications are nonetheless unwell-shaped, per the language’s rules; and will lead to an error on translation or execution.
