25.1.4 Default values of the parameters
You can give the parameters of a function default values by putting
parameter=value in the parameter list of
the function. For example, if you define a function:
| f(x,y=5,z):={
return x*y*z;
} |
then:
since the product 1· 2· 3=6. If you give f only two
values as input:
since the values 3 and 4 will be given to the parameters which do not
have default values; in this case, y will get its default value 5 while
3 and 4 will be assigned to x and
z, respectively. The result is x y z=3· 5· 4=60.