Question

input: two floating point numbers. output: average of those numbers

Answer 1

In C, there are numerous regular administrators among whole numbers and gliding point numbers (buoy or twofold, long twofold could be there as well).

That apply to expansion administrator "+".

In C, whole numbers could be communicated by "int" (long int, short int, long int, twofold ding int, and so on.).

Coasting point numbers by "skim".