4.1 Number Per Line

One declaration per line is recommended since it encourages commenting. In other words,

int level; // indentation level

int size;  // size of table

is preferred over

int level, size;

In absolutely no case should variables and functions be declared on the same line. Example:

long dbaddr, getDbaddr(); // WRONG!

Do not put different types on the same line. Example:

int foo, fooarray[]; //WRONG!

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Note - The examples above use one space between the type and the identifier. Another acceptable alternative is to use tabs, e.g.:

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int	level;				 // indentation level

int	size;				 // size of table

Object	currentEntry;	 // currently selected table entry