Constants, Variables and Keywords used in C

When alphabets, numbers and special symbols are properly joined, they form keywords {also see: Character set used in C}. Let us now study about the “constants” and “variable” used in C language. Almost all of us know that constants are quantities that don’t change their value and variable are the quantities that change their value. Variables are the name given to the memory location where the constants are stored. {also see: Types of C constants}

To write a error free program we have to learn the basic fundamental elements of C in a detailed way. Only if the base is strong then only we can write a error free program. So an absolute clear conception is required about the different types of constants, variables and keywords and their interaction with each other is a single most important factor contributing towards writing error free programs.