CISC 220 Lecture Notes - Lecture 22: Entry Point, Exit Status, Bell Labs
16 Nov 2016
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Document Summary
Designed in the early 70s at bell labs. Low level: nothing other than access to the machines basic instructors. High level: provides everything the programmer might want to do already built into the lang (eg. python) Middle level: access to the machine"s hardware & supplies but not all the same features as high level (eg. c) Put your code in a new file with . c extension. In the message you can specify the length of parameters. In the message you can also specify the precision for float and double parameters. Can not have any text but specifying the types of parameters. Expects input in the same format you provided. A c program consists of the following parts: Preprocessor directives: starts with # and it is just a text substitution tool. Function declaration (optional): shows how to use a function. Global variables definition (optional): assessed from any function defined outside all function. Functions definition: all details of how the function works.
