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Challenges Reverse an ASCII string

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...

posted 4y ago by Lundin‭  ·  edited 3y ago by Lundin‭

Answer
#4: Post edited by user avatar Lundin‭ · 2021-09-09T10:17:58Z (about 3 years ago)
  • # 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, since this wasn't specified.
  • ---
  • Revisited, function-based equivalent of the above (plus I have no idea what compiler I used to get putch working, not gcc/Linux at least):
  • # [C (gcc)], 53 bytes
  • <!-- language-all: lang-c -->
  • *o;f(char*s){for(s=strchr(o=s,0);s-->o;)putchar(*s);}
  • [Try it online!][TIO-ktcryfme]
  • [C (gcc)]: https://gcc.gnu.org/
  • [TIO-ktcryfme]: https://tio.run/##FcoxDoMwDADAPa@ImGxEpO4R/UtkCImU4spOy4D4et325qOwEZmNHDNQSTIqnpkFdNYuVAR41umGUUO4c8Tnq/8X/Fq8rO7dP1Ld4c11QXc67zMMZW2NJ3@wtGXA6C77UG5pUwvHFw "C (gcc) – Try It Online"
  • # 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, since this wasn't specified.
  • ---
  • EDIT: Revisited, function-based equivalent of the above (plus I have no idea what compiler I used to get putch working, not gcc/Linux at least):
  • # [C (gcc)], 53 bytes
  • <!-- language-all: lang-c -->
  • *o;f(char*s){for(s=strchr(o=s,0);s-->o;)putchar(*s);}
  • [Try it online!][TIO-ktcryfme]
  • [C (gcc)]: https://gcc.gnu.org/
  • [TIO-ktcryfme]: https://tio.run/##FcoxDoMwDADAPa@ImGxEpO4R/UtkCImU4spOy4D4et325qOwEZmNHDNQSTIqnpkFdNYuVAR41umGUUO4c8Tnq/8X/Fq8rO7dP1Ld4c11QXc67zMMZW2NJ3@wtGXA6C77UG5pUwvHFw "C (gcc) – Try It Online"
#3: Post edited by user avatar Lundin‭ · 2021-09-09T10:17:44Z (about 3 years ago)
  • # 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, since this wasn't specified.
  • # 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, since this wasn't specified.
  • ---
  • Revisited, function-based equivalent of the above (plus I have no idea what compiler I used to get putch working, not gcc/Linux at least):
  • # [C (gcc)], 53 bytes
  • <!-- language-all: lang-c -->
  • *o;f(char*s){for(s=strchr(o=s,0);s-->o;)putchar(*s);}
  • [Try it online!][TIO-ktcryfme]
  • [C (gcc)]: https://gcc.gnu.org/
  • [TIO-ktcryfme]: https://tio.run/##FcoxDoMwDADAPa@ImGxEpO4R/UtkCImU4spOy4D4et325qOwEZmNHDNQSTIqnpkFdNYuVAR41umGUUO4c8Tnq/8X/Fq8rO7dP1Ld4c11QXc67zMMZW2NJ3@wtGXA6C77UG5pUwvHFw "C (gcc) – Try It Online"
#2: Post edited by user avatar Lundin‭ · 2020-12-01T15:57:53Z (almost 4 years ago)
  • # 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, since this wasn't specified.
  • # 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, since this wasn't specified.
#1: Initial revision by user avatar Lundin‭ · 2020-12-01T15:57:25Z (almost 4 years ago)
# 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, since this wasn't specified.