Composite functions are made when the output from one function is used as the input of another function. The names of the functions are written next to each other, with the function that is used first ...
Excel's VALUE function has only one argument: where a is the value stored as text that you want to convert into a number.
The C and C++ standards do not specify the order of evaluation for function arguments. This can lead to subtle portability problems. As I explained in my column last month (“As Precise As Possible”), ...