However, it is said that Pascal is the most successful heir in the Algol language family for several decades. In 1968, one of the early members of Algol organization was approved as the "Program = Algorithm Data Structure" of Software, and Nicholas, Swiss Federal Institute of Technology (The Swiss Federal Institute of Technology, Eth-Zurich). Worth Professor (Niklaus Wirth) began to develop a evolutionary version of Algol, and he decided to simplify and eliminate the functionality of the original Algol some embarranging features and increase the ability to customize data types to make up for the lack of simple data types. In addition, you can support dynamic arrays, use the reserved keyword, and the like. By 1970, the first implementation of this language has been developed on the CDC 6000.
In 1971, Professor WIRTH has published a high-level structured language specification note, and people have surprisingly discovered that this language is like Algol, and the grammar of the blue, the condition judgment statement "case" and the return value parameter passed the syntax and Algol Opening the same, but the recording structure is three-point appearance with Cobol and PL / 1, but also seems to be intended to learn from the loss of Fortran in certain characteristics, read like a natural language, it is easy to get started, through strict types It is possible to ensure that the data type does not have errors in the declaration and use, and the overall has a clear and complete and complete syntax style. The ALGOL warrior, eventually the Great Mathematician and philosopher Bryce in the 17th century. Blaise Pascal is named.
Professor Wirth may have not thought that this program is only used in the small language of the University professor data structure. Since the name of this name, the generation of the generation has achieved a generation of legend, which also won the Tuling Award for him later (1984) (1984). Turing prize's suggestion buried a film. Herch's famous C language until 1972 is only in the development of UNIX. Obviously, the two are initially aimed at different directions: c is Dennis Ritchie to write a clever way with Assembly to write tired UNIX, which is intended to use the high-level language to use the high-level 驭 carriage; while Pascal, from the birth From the day, it is to create a new world for creating an orderly, easy-to-maintain application. Even the Unix, Linux, and Windows, which appears C, Pascal (exactly what WITH Professor and Apple Developed Object Pascal) creates interest in Lisa and Macintosh (Note: Current Mac OS X has been used "from FreeBSD Darwin kernel operating system, in a sense, PASCAL is also refined), who can think about it, the children of the two Dynasties in Microsoft's new expensive. Net of the Dai Dynasty, tongged Common Language ?
This article original author: Firebird Li Guoping, please indicate the source article online reference: taoyue.com: Learn Pascal tutorial - Historyhttp: //www.taoyue.com/tutorials/pascal/history.htmlA Brief History of Pascalhttp: // burks .bton.ac.uk / burks / language / obhistoric documents in computer science and engineeringhttp: //www.fh-jena.de/~kleine/history/
