To proclaim a variable you make use of the syntax "type <name>;". Here are a few variable declaration examples:

Code:
int x;
char letter;
float the_float;
It is allowable to state numerous variables of the similar type on the similar line; every one must be divided by a comma.

Code:
int a, b, c, d;
If you were watching closely, you may have seen that statement of a variable is forever followed by a semicolon (note that this is the similar process used when you call a function).