Posts by Lundin
The task is to take a decimal integer as input and print the corresponding Roman numeral with capital letters. The program must handle all positive integer numbers between 1 and 1000. Input can be...
C, 8 solutions Standard C, no extensions. 1 solution snippet per line: "llll"[3]^33^333 4*4*4*4 5555-555-555-555-555-555-555-555-555-555-55-55-55-55-55-5-5-5-7-7 6666/26 (int){8<...
The task is to create a program which displays a golf score as text. It takes 2 numbers as input, separated by space or new line: The first number is the par of the specific hole. The second nu...
None of these are applicable at least not for Code Golf challenges. I think this community should "opt out" of reactions unless we can come up with more relevant ones. "Works for me". Answers ...
Well... maybe not in combination with a code golf challenge, but more like an artistic challenge with some theme, similar to screenshot of the month? For reference see for example Outdoors photo co...
Many programming languages have the concept of keywords, special syntax items that are not just identifiers reserved by some library, but words reserved by the language itself. The challenge is to...
Code Golf seems like a fun idea to me, since I'm a programmer by trade and "language lawyer" nerd as a hobby. But every time I checked the code golf site on SE, I dismissed it as nonsense, because...
C (gcc), 30 bytes f(x,y){return x+y|!(x^y|x^2);} Try it online! In case the "preferably on a function" requirement can be dropped, then #define f(x,y)x+y|!(x^y|x^2) is 28 bytes.
C (gcc), 8 7 unique cos(cos-cos)/(cos(cos-cos)-(-cos(cos-cos))) Try it online! -1 unique character thanks to @orthoplex
C (gcc), 100 bytes i,j;f(x,y,p)int*p;{puts("[");for(;i<x;i++)for(j=0;j<y;j++)*p++&&printf("[%d,%d],",i,j);puts("\b]");} Try it online! Note that TIO console doesn't handle back...
Command-line arguments may be used as input instead of stdin Languages/systems that support reading input from command-line arguments may use those as input instead of reading from stdin.
The challenge is to write as short a source as possible, where the English alphabet (in alphabetical order from top to bottom) "abcdefghijklmnopqrstuvwxyz" is a sub-sequence of the source code. Th...
C (gcc), 147 151 bytes #define L(X)X(+,a+b)X(-,a-b)X(*,a*b)X(/,b&&a/b)X(%,b&&a%b)X(^,pow(a,b)) #define M(o,d)printf("%s",d==c?#o" ":z++==5?".":""); z;s[99];f(a,b,c){L(M)} Tr...
C (gcc), 62 bytes main(){char b[99],*p=strchr(gets(b),0);for(;p-->b;)putch(*p);} This relies on the usual gcc extension abuse. It assumes that max user input is 98 characters + null term, si...
If restricting everyone to the same system, then we can force every contestant to use https://tio.run and the on-site bench-marking found below "debug" -> "real time" as efficiency metric. Examp...
C (gcc), 108 bytes *h,i;main(){for(;i++<100;){char s[]="%dFizzBuzz ",b=i%5;h=s+2;printf(s+(i%3?b?*h=32,0:6:b?h[1]=32,2:2),i);}} Godbolt. Works on clang too. Contains some serious abuse of al...
C or C++ (gcc) 220 bytes, cracked by Razetime %: %: define cops(a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t) if(not false and k%:%:f%:%:d%:%:l(& (not true) <:%:i%:j%:k%:l" "%:m" "%:n%:o%:p%:...
LOLCODE, 37 bytes HAI 1 VISIBLE "Hello, World!" KTHXBYE Try it online!
C (gcc), 43 bytes a[99];main(){printf("Hello, %s!",gets(a));} Try it online!
C (gcc), 119 118 116 115 bytes #define p(x,y,z) printf(i^1?i^c?#z:#y:#x) i,j;f(c){for(i=1;i<=c;p(╗\n,╝\n,╣\n),i++)for(j=p(╔,╚,╠);j++<c;)p(╦,╩,╬);} Try it online! Function solution. I...
C (gcc), 244 bytes main(){for(char*w=" bottles of beer on the wall",i=100;--i;)printf("%d%.*s%s, %d%.*s%.8s.\n%s, %d%.*s%s.\n\n",i,i-1?8:7,w,w+8,i,i-1?8:7,w,w+8,i^1?"Take one down and pass it ar...
