Types of C variables
As we saw earlier, an entity that may very during program execution is called a variable. Variable manes are names given to locations in memory. these locations can contain integer, real or character constant. In any language, the types of variables that it can support depend on the type of constants that it can handle.This is because a particular type of variable can hold only the same type of constant. For example, an integer variable can hold only an integer constant, a real variable can hold only a real constant and a character variable can hold only a character constant. Rules for Constructing Variables Names (a) A variable name in any combination of 1 to 31 alphabets, digits or underscores. Some compiler allow variable manes, whole length could be up to 247 characters. Still, it would be safer to stick to the rule of 31 characters. Do not create unnecessarily long variable names as it adds to your typing effort. (b) The first character in the variable name must...