C uses the uppercase letters A to Z, the lowercase
letters a to z, the digits 0 to 9, and certain special characters as building
blocks to form basic program elements (e.g. constants, variables, operators,
expressions, etc). The special characters are listed below: + - * / = % & #
! ? ^ “ ' ~ \ | < > ( ) [ ] { } : ; . , - (blank space) (Horizontal tab)
(White Space) Most versions of the language
also allow certain other characters, such as @ and $ to be included with
strings & comments.
Data and Information Data is an unprocessed raw fact which does not give complete meaning about any object,person, entity etc. But when various inter-related data arranged in a row, it gives a complete meaning which is referred to as information. For Example: ID Name Address Program 1101 Ram Shrestha Biratnagar BScIT is information of a specific person. Database Database is a repository(storage) for the organized collection of related information of data items. It Consist of meaningful arrangement of data, relationship, constraints, schema etc. In modern days we define database as a computerized record-keeping system used to store information and allows users to retrieve and update these information on their request. Some example of databases are telephone directory, data of SLC result, student and employee records etc. Database Management System(DBMS) Database is the softw...
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