is it possible to contribute on this repository ? if yes then how? #1

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1. jadijadi commented on Jul 30, 2023

   

   jadijadi

   on Jul 30, 2023

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   I'm also figuring out :)
   My general idea is recording some videos to show how I code semi-simple functions / scripts to solve everyday life or simple questions. To give people who know the language, practices on simple problems. The questions might come from read world issues, CTFs, jobs, needs, questions, ....

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2. abzrgzdh commented on Aug 2, 2023

   

   abzrgzdh

   on Aug 2, 2023

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   can we contribute answers in different languages (e.g. solve.c for an answer in C)?
3. abzrgzdh commented on Aug 2, 2023

   

   abzrgzdh

   on Aug 2, 2023

   Last edited by abzrgzdh

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   For example, here is my answer (inspired by yours) to strings/tfcctf2023-MAYDAY

   #include <stdio.h>
   #include <string.h>
   #include <stdbool.h>
   
   
   /*
      An interesting bug happend here when I set SPECIALS_MAX_KEY to 5.
   
      In that case
         token != specials[i].k 
      for the strings "Three", "Seven", and "Eight".
   
      That is because former is a pointer to an arbitrary sized array of chars (char *) ending with '\0' but
      the later is a strictly sized (5) character without '\0' (char c[5])
   */
   #define SPECIALS_MAX_KEY 6UL
   typedef struct {
       const char k[SPECIALS_MAX_KEY];
       char v;
   } specials_t;
   
   #define SPECIALS_SIZE (sizeof(specials) / sizeof(specials[0]))
   const specials_t specials[] = {
       { .k = "One",   .v = '1' },
       { .k = "Two",   .v = '2' },
       { .k = "Three", .v = '3' },
       { .k = "Four",  .v = '4' },
       { .k = "Five",  .v = '5' },
       { .k = "Six",   .v = '6' },
       { .k = "Seven", .v = '7' },
       { .k = "Eight", .v = '8' },
       { .k = "Nine",  .v = '9' },
       { .k = "Zero",  .v = '0' },
       { .k = "Dash",  .v = '-' }
   };
   
   
   #define DELIMITER " "
   
   
   bool find_special_token(const char* token, char* output) {
       for (size_t i = 0; i < SPECIALS_SIZE; i++) {
           if (strncmp(token, specials[i].k, SPECIALS_MAX_KEY) == 0) {
               *output = specials[i].v;
               return true;
           }
       }
       return false;
   }
   
   // ----<main>------------------------------------------------------------------
   
   int main(void)
   {
       char response[] = "Whiskey Hotel Four Tango Dash Alpha Romeo Three Dash"
                         " Yankee Oscar Uniform Dash Sierra One November Kilo"
                         " India November Golf Dash Four Bravo Zero Uniform Seven";
   
   
       char* token = strtok(response, DELIMITER);
   
       while (token != NULL) {
           char special_token = { 0 };
   
           if (find_special_token(token, &special_token)) {
               putchar(special_token);
           } else {
               putchar(token[0]);
           }
   
           token = strtok(NULL, DELIMITER);
       }
   
       printf("\n");
   
       return 0;
   }
4. jadijadi commented on Aug 2, 2023

   

   jadijadi

   on Aug 2, 2023

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   can we contribute answers in different languages (e.g. solve.c for an answer in C)?

   I think this is a good idea. I will check and accept
5. jadijadi commented on Aug 2, 2023

   

   jadijadi

   on Aug 2, 2023

   Owner

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   For example, here is my answer (inspired by yours) to strings/tfcctf2023-MAYDAY

   #include <stdio.h>
   #include <string.h>
   #include <stdbool.h>
   
   
   /*
      An interesting bug happend here when I set SPECIALS_MAX_KEY to 5.
   
      In that case
         token != specials[i].k 
      for the strings "Three", "Seven", and "Eight".
   
      That is because former is a pointer to an arbitrary sized array of chars (char *) ending with '\0' but
      the later is a strictly sized (5) character without '\0' (char c[5])
   */
   #define SPECIALS_MAX_KEY 6UL
   typedef struct {
       const char k[SPECIALS_MAX_KEY];
       char v;
   } specials_t;
   
   #define SPECIALS_SIZE (sizeof(specials) / sizeof(specials[0]))
   const specials_t specials[] = {
       { .k = "One",   .v = '1' },
       { .k = "Two",   .v = '2' },
       { .k = "Three", .v = '3' },
       { .k = "Four",  .v = '4' },
       { .k = "Five",  .v = '5' },
       { .k = "Six",   .v = '6' },
       { .k = "Seven", .v = '7' },
       { .k = "Eight", .v = '8' },
       { .k = "Nine",  .v = '9' },
       { .k = "Zero",  .v = '0' },
       { .k = "Dash",  .v = '-' }
   };
   
   
   #define DELIMITER " "
   
   
   bool find_special_token(const char* token, char* output) {
       for (size_t i = 0; i < SPECIALS_SIZE; i++) {
           if (strncmp(token, specials[i].k, SPECIALS_MAX_KEY) == 0) {
               *output = specials[i].v;
               return true;
           }
       }
       return false;
   }
   
   // ----<main>------------------------------------------------------------------
   
   int main(void)
   {
       char response[] = "Whiskey Hotel Four Tango Dash Alpha Romeo Three Dash"
                         " Yankee Oscar Uniform Dash Sierra One November Kilo"
                         " India November Golf Dash Four Bravo Zero Uniform Seven";
   
   
       char* token = strtok(response, DELIMITER);
   
       while (token != NULL) {
           char special_token = { 0 };
   
           if (find_special_token(token, &special_token)) {
               putchar(special_token);
           } else {
               putchar(token[0]);
           }
   
           token = strtok(NULL, DELIMITER);
       }
   
       printf("\n");
   
       return 0;
   }

   So please open an RP, if not already done

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6. abzrgzdh commented on Aug 2, 2023

   

   abzrgzdh

   on Aug 2, 2023

   Last edited by abzrgzdh

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   So please open an RP, if not already done

   sure I'll do