5.1.2.1 Freestanding environment

1

In a freestanding environment (in which C program execution may take place without any benefit of an operating system), the name and type of the function called at program startup are implementation-defined. Any library facilities available to a freestanding program, other than the minimal set required by clause 4, are implementation-defined.

2

The effect of program termination in a freestanding environment is implementation- defined.