f is formatted output. The format specifier is a parameter of the printf function. The parameters of printf can also vary in use hence printf is variadic: printf( %3.2f\n, someNumber ); //prints a float 3 digits wide and 2 decimal places in precision.
As a result, fixed costs are sometimes called period costs. Some fixed costs are incurred at the discretion of a company's management, such as advertising and promotional expense, while others are not. It is important to remember that all non-discretionary fixed costs will be incurred even if production or sales volume falls to zero.
A fixed cost is a cost which is incurred for an accounting period, and which, within certain activity levels remains constant. Fixed costs can be shown graphically as follows: The total cost remains constant over a given level of activity but that the cost per unit falls as the level of activity increases. Examples of fixed costs include rent, business rates and executive salaries. Numerical illustration of a fixed cost graph.