H Lecture Notes - Lecture 4: Ampersand
11 Sep 2021
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/-slash \ back slash | vertical bar ( parenthesis [ bracket { set bracket. An identifier is a name having a few letters, numbers and special characters. It is used to identify a variable, function, symbolic constant and so on. An identifier can be written with a maximum of 31 characters. It is a good practice to have identifiers with few letters. Note that c language is case sensitive which means that lower and upper case letters are considered differently. For example, sum and sum represent different variables/function names. C language uses the following keywords which are not users to use them as variables/function names. we have 32 key words. Any unchanged value in a program during the execution is called constant. Fundamentals of c2 in c language 10^ is written as e^ Any string of characters enclosed in apostrophes or quotes is called string constant or character constants.
