Icon is a high-degree, normal-function programming language with novel features including string scanning and goal-directed evaluation. The C programming language was developed in 1972 by Dennis Ritchie and Brian Kernighan on the AT&T Corporation for programming pc working system s. Its capacity to structure knowledge and packages by way of the composition of smaller units is similar to that of ALGOL.

The elevated use of high-level languages introduced a requirement for low-stage programming languages or system programming languages These languages, to varying levels, provide facilities between meeting languages and excessive-level languages and can be used to perform tasks which require direct access to hardware services but nonetheless present greater-level management structures and error-checking.

Statically typed languages might be either manifestly typed or type-inferred Within the first case, the programmer should explicitly write types at certain textual positions (for instance, at variable declarations ). Within the second case, the compiler infers the sorts of expressions and declarations primarily based on context.

Lying between machine languages and high-level languages are languages referred to as meeting languages Meeting languages are just like machine languages, however they are much simpler to program in because they permit a programmer to substitute names for numbers.