What is Character set A Character denotes any alphabets, digits and special symbols used to represent information for Example alphabets A,B...Y,Z Or a,b...y,z Digits 0,1,2,3,4,5,6,7,8,9 Special symbols `~ !@#$%^&*()_+-=}{|":<>?/.,;'\][ Constants, variables and keywords The alphabets, digits and special symbols when properly combined from constants, variable and keywords. A constants is an entity that doesn't change, whereas, a variable is an entity that may change. A keyword is a word that carries special meaning. In any C program, we typically do lots of calculations. The result of these calculation are store in memory of computer, Like human memory, the memory of computer also consists of millions of cell. The calculated value are store in the brain. That way computer are calculation store in memory ( as hard disk etc). Since the value stored in each locations may change. In programming language, constants are often called literals, whe...
