{"id":229,"date":"2006-10-03T08:38:58","date_gmt":"2006-10-03T08:38:58","guid":{"rendered":"http:\/\/gaisan.com\/wordp\/?p=229"},"modified":"2009-12-19T23:41:13","modified_gmt":"2009-12-19T23:41:13","slug":"who-writes-code-like-this","status":"publish","type":"post","link":"http:\/\/gaisan.com\/blogs\/?p=229","title":{"rendered":"Who writes code like this?"},"content":{"rendered":"

The infamous International Obfuscated C Code<\/a> winner from 1984. I have a sizeable bet that it’s Bjarne Stroustroup, the inventor of C++. However, Brian Kernighan is also a possibility. Send me your thoughts based on coding style etc.
\nint i;main(){for(;i[\"]
\nAn explanation of the code goes something like this.
\nint i;main(){for(;i[\"]i;++i){--i;}\"];read('-'-'-',i+++ \"hell\\
\no, world!\\n\",'\/'\/'\/'));}read(j,i,p){write(j\/p+p,i---j ,i\/i);}
\n==== add some whitespace ==========
\nint i;
\nmain()
\n{
\nfor (; i[\"]i;++i){--i;}\"]; read('-' - '-', i++ + \"hello, world!\\n\", '\/' \/ '\/'));
\n}
\nread(j, i, p)
\n{
\nwrite(j \/ p + p, i-- - j, i \/ i);
\n}
\n===== and char subtraced from itself is 0, and char or pointer divided by itself is 1 =====
\nint i;
\nmain()
\n{
\nfor (; i[\"]i;++i){--i;}\"]; read(0, i++ + \"hello, world!\\n\", 1));
\n}
\nread(j, i, p)
\n{
\nwrite(j \/ p + p, i-- - j, 1);
\n}
\n======= j is always 0, p is always 1, lets remove them ======
\nint i;
\nmain()
\n{
\nfor (; i[\"]i;++i){--i;}\"]; read(i++ + \"hello, world!\\n\"));
\n}
\nread(i)
\n{
\nwrite(0 \/ 1 + 1, i-- - 0, 1);
\n}
\n======= 0 \/ 1 + 1 is 1, subtracting 0 does nothing, decrementing a local variable this is never used afterward also does nothing =======
\nint i;
\nmain()
\n{
\nfor (; i[\"]i;++i){--i;}\"]; read(i++ + \"hello, world!\\n\"));
\n}
\nread(i)
\n{
\nwrite(1, i, 1);
\n}
\n======== replace read(i) with write(1, i, 1) =====
\nint i;
\nmain()
\n{
\nfor (; i[\"]i;++i){--i;}\"]; write(1, i++ + \"hello, world!\\n\", 1));
\n}
\n====== i[n] can be rewritten *(i + n) or *(n + i) ======
\nint i;
\nmain()
\n{
\nfor (; *(\"]i;++i){--i;}\" + i); write(1, \"hello, world!\\n\" + i++, 1));
\n}
\n=== as i gets incrimented, we dereference the next char of the string which is always non-zero till we hit the null terminator, all the matters is that the string is the same length as \"hello, world!\\n\" =====
\nint i;
\nmain()
\n{
\nfor (; *(\"hello, world!\\n\" + i); write(1, \"hello, world!\\n\" + i++, 1));
\n}
\n===== so now we can see we incriment i, printing out the next character of hello world till we hit the null terminator ====
\n<\/code>
\nWith thanks to slashdot and Thomas Scovell (who has it tattooed<\/a> on his arm)<\/p>\n","protected":false},"excerpt":{"rendered":"

The infamous International Obfuscated C Code winner from 1984. I have a sizeable bet that it’s Bjarne Stroustroup, the inventor of C++. However, Brian Kernighan is also a possibility. Send me your thoughts based on coding style etc. int i;main(){for(;i[“]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[1700],"_links":{"self":[{"href":"http:\/\/gaisan.com\/blogs\/index.php?rest_route=\/wp\/v2\/posts\/229"}],"collection":[{"href":"http:\/\/gaisan.com\/blogs\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/gaisan.com\/blogs\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/gaisan.com\/blogs\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/gaisan.com\/blogs\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=229"}],"version-history":[{"count":5,"href":"http:\/\/gaisan.com\/blogs\/index.php?rest_route=\/wp\/v2\/posts\/229\/revisions"}],"predecessor-version":[{"id":504,"href":"http:\/\/gaisan.com\/blogs\/index.php?rest_route=\/wp\/v2\/posts\/229\/revisions\/504"}],"wp:attachment":[{"href":"http:\/\/gaisan.com\/blogs\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/gaisan.com\/blogs\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=229"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/gaisan.com\/blogs\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}