Różnice między wybraną wersją a wersją aktualną.
| — |
pl:prolog:pllib:add [2019/06/27 15:50] (aktualna) |
||
|---|---|---|---|
| Linia 1: | Linia 1: | ||
| + | ====== Add ====== | ||
| + | {{tag>math arithmetic}} | ||
| + | ===== Description ===== | ||
| + | Multiple uses for plus | ||
| + | |||
| + | **Source**: The Art of Prolog | ||
| + | ===== Download ===== | ||
| + | Program source code: {{prolog:pllib:add.pl}} | ||
| + | ===== Listing ===== | ||
| + | <code prolog> | ||
| + | /* | ||
| + | myplus(X,Y,Z) :- The sum of the numbers X and Y is Z. | ||
| + | */ | ||
| + | myplus(X,Y,Z) :- nonvar(X), nonvar(Y), Z is X + Y. | ||
| + | myplus(X,Y,Z) :- nonvar(X), nonvar(Z), Y is Z - X. | ||
| + | myplus(X,Y,Z) :- nonvar(Y), nonvar(Z), X is Z - Y. | ||
| + | |||
| + | % Program 10.1 Multiple uses for plus | ||
| + | |||
| + | </code> | ||
| + | ===== Comments ===== | ||
