F # Tutorials-numeric processing

This time, we learn the numerical calculation. First, look at the following code:

#light
let　x　=　10.0　+　12.0　-　3.0
let　y　=　x　*　2.0　+　1.0
let　r　=　x/3.0
printfn　"x　=　%g,　y　=　%g,　r　=　%g"　x　y　r

There is little need to explain this code. Because the operation symbol is consistent with C #.

#light
let　x　=　4　+　6　-　3
let　y　=　x　*　2　+　1
let　q　=　x　/　3
let　r　=　x　%　3
printfn　"x　=　%d,　y　=　%d,　q　=　%d,　q　=　%d"　x　y　q　r

The results of the operation are:

x = 7, y =, q = 2, q = 1

The computation between integers, and the result is an integer. This is the same as C #. The code for floating-point operations is as follows:

#light
let　x　=　10.0　+　12.0　-　3.0
let　y　=　x　*　2.0　+　1.0
let　r　=　x/3.0
printfn　"x　=　%g,　y　=　%g,　r　=　%g"　x　y　r

The%g is used in the PRINTFN. %g should C language also have it, a long time ago used now remember is not very clear. The results of the operation are:

x =, y = 6.33333

Where the decimal part is not displayed if it is 0.

But if you use the%f, the small number of chapters show unconditionally.

For the numeric operations of F #, there should be no particular difficulty in using them if you know some other language.