C Primer Plus®, Third Edition

Summary: How to Declare a Simple Variable

1. Choose the type you need.

2. Choose a name for the variable.

3. Use this format for a declaration statement: type-specifier variable-name;. The type-specifier is formed from one or more of the type keywords. Here are some examples:

   int erest;
   unsigned short cash;
   

4. To declare more than one variable of the same type, separate the variable names with commas:

   char ch, init, ans;
   

5. You can initialize a variable in a declaration statement:

   float mass = 6.0E24;
   

Summary: Storage Classes Keywords: auto, extern, static, register General Comments: The storage class of a variable determines its scope, its linkage, and its storage duration. Storage class is determined both by where the variable is defined and by its associated ...