24 game: Difference between revisions

24 game (view source)

Revision as of 20:27, 13 January 2014

13 bytes added , 10 years ago

Correction: the input is not an equation, but an arithmetic expression. An equation requires two sides joined by the = operator, which is explicitly disallowed.

Kazinator

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Revision as of 19:07, 21 December 2013 (view source) rosettacode>GlitchMr (→‎{{header\|C}}: Remove ucontext.h abuse (and use setjmp.h instead).) ← Older edit		Revision as of 20:27, 13 January 2014 (view source) Kazinator (talk \| contribs) (Correction: the input is not an equation, but an arithmetic expression. An equation requires two sides joined by the = operator, which is explicitly disallowed.) Newer edit →
Line 2: The [[wp:24 Game\|24 Game]] tests one's mental arithmetic. Write a program that [[task feature::Rosetta Code:randomness\|randomly]] chooses and [[task feature::Rosetta Code:user output\|displays]] four digits, each from one to nine, with repetitions allowed. The program should prompt for the player to enter an ~~equation~~arithmetic expression using ''just'' those, and ''all'' of those four digits. The program should ''check'' then [[task feature::Rosetta Code:parsing\|evaluate the expression]]. The goal is for the player to [[task feature::Rosetta Code:user input\|enter]] an expression that evaluates to '''24'''. * Only multiplication, division, addition, and subtraction operators/functions are allowed. * Division should use floating point or rational arithmetic, etc, to preserve remainders.