Różnice między wybraną wersją a wersją aktualną.
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pl:prolog:pllib:add_2 [2019/06/27 15:50] (aktualna) |
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| + | ====== Add 2 ====== | ||
| + | {{tag>math arithmetic}} | ||
| + | ===== Description ===== | ||
| + | Addition | ||
| + | |||
| + | **Source**: The Art of Prolog | ||
| + | ===== Download ===== | ||
| + | Program source code: {{prolog:pllib:add_2.pl}} | ||
| + | ===== Listing ===== | ||
| + | <code prolog> | ||
| + | /* | ||
| + | myplus(X,Y,Z) :- | ||
| + | X, Y and Z are natural numbers | ||
| + | such that Z is the sum of X and Y. | ||
| + | */ | ||
| + | |||
| + | myplus(0,X,X) :- natural_number(X). | ||
| + | myplus(s(X),Y,s(Z)):- myplus(X,Y,Z). | ||
| + | |||
| + | natural_number(0). | ||
| + | natural_number(s(X)) :- natural_number(X). | ||
| + | |||
| + | % Program 3.3: Addition | ||
| + | </code> | ||
| + | ===== Comments ===== | ||
