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Rock-paper-scissors: Difference between revisions
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My wins: 4
Your wins: 1</lang>
=={{header|Icon}} and {{header|Unicon}}==
<lang Icon>link printf
procedure main()
printf("Welcome to Rock, Paper, Scissors.\n_
Rock beats scissors, Scissors beat paper, and Paper beats rock.\n\n")
historyP := ["rock","paper","scissors"] # seed player history
winP := winC := draws := 0 # totals
beats := ["rock","scissors","paper","rock"] # what beats what 1 apart
repeat {
printf("Enter your choice or rock(r), paper(p), scissors(s) or quit(q):")
turnP := case map(read()) of {
"q"|"quit": break
"r"|"rock": "rock"
"p"|"paper": "paper"
"s"|"scissors": "scissors"
default: printf(" - invalid choice.\n") & next
}
turnC := beats[(?historyP == beats[i := 2 to *beats],i-1)] # choose
put(historyP,turnP) # record history
printf("You chose %s, computer chose %s",turnP,turnC)
(beats[p := 1 to *beats] == turnP) &
(beats[c := 1 to *beats] == turnC) & (abs(p-c) <= 1) # rank play
if p = c then
printf(" - draw (#%d)\n",draws +:= 1 )
else if p > c then
printf(" - player win(#%d)\n",winP +:= 1)
else
printf(" - computer win(#%d)\n",winC +:= 1)
}
printf("\nResults:\n %d rounds\n %d Draws\n %d Computer wins\n %d Player wins\n",
winP+winC+draws,draws,winC,winP)
end</lang>
{{libheader|Icon Programming Library}}
[http://www.cs.arizona.edu/icon/library/src/procs/printf.icn printf.icn provides printf]
Sample output:<pre>Welcome to Rock, Paper, Scissors.
Rock beats scissors, Scissors beat paper, and Paper beats rock.
Enter your choice or rock(r), paper(p), scissors(s) or quit(q):s
You chose scissors, computer chose scissors - draw (#1)
Enter your choice or rock(r), paper(p), scissors(s) or quit(q):p
You chose paper, computer chose paper - draw (#2)
Enter your choice or rock(r), paper(p), scissors(s) or quit(q):r
You chose rock, computer chose scissors - computer win(#1)
Enter your choice or rock(r), paper(p), scissors(s) or quit(q):r
You chose rock, computer chose rock - draw (#3)
Enter your choice or rock(r), paper(p), scissors(s) or quit(q):p
You chose paper, computer chose paper - draw (#4)
Enter your choice or rock(r), paper(p), scissors(s) or quit(q):s
You chose scissors, computer chose scissors - draw (#5)
Enter your choice or rock(r), paper(p), scissors(s) or quit(q):r
You chose rock, computer chose rock - draw (#6)
Enter your choice or rock(r), paper(p), scissors(s) or quit(q):r
You chose rock, computer chose paper - player win(#1)
Enter your choice or rock(r), paper(p), scissors(s) or quit(q):q
Results:
8 rounds
6 Draws
1 Computer wins
1 Player wins</pre>
=={{header|Java}}==
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