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  1. #include <stdlib.h>
  2. #include <stdio.h>
  3. #include <string.h>
  4.  
  5. size_t run(char * code,
  6.            size_t code_len,
  7.            size_t code_pos,
  8.            unsigned char ** data_ptr,
  9.            char ** input_ptr,
  10.            char ** output_ptr,
  11.            int depth)
  12. {
  13.    size_t i, begin, end;
  14.    for(i = code_pos; i < code_len; i++)
  15.    {
  16.       switch(code[i])
  17.       {
  18.          case '+': (**data_ptr)++; break;
  19.          case '-': (**data_ptr)--; break;
  20.          case '>': (*data_ptr)++; break;
  21.          case '<': (*data_ptr)--; break;
  22.          case ',': **data_ptr = **input_ptr; (*input_ptr)++; break;
  23.          case '.': **output_ptr = **data_ptr; (*output_ptr)++; break;
  24.          case ']': return i;
  25.          case '[':
  26.             begin = i;
  27.             while(**data_ptr)
  28.             {
  29.                code_pos = begin + 1;
  30.                end = run(code, code_len, code_pos, data_ptr, input_ptr, output_ptr, depth + 1);
  31.             }
  32.             i = end;
  33.             break;
  34.       }
  35.    }
  36.  
  37.    return 0;
  38. }
  39.  
  40. char * brain_luck(char * code, char * input)
  41. {
  42.    unsigned char * data = (unsigned char *)malloc(1024);
  43.    memset(data, '\0', 1024);
  44.  
  45.    char * output = (char *)malloc(1024);
  46.    memset(output, '\0', 1024);
  47.  
  48.    unsigned char * data_ptr = data;
  49.    char * input_ptr = input;
  50.    char * output_ptr = output;
  51.  
  52.    printf("Code: '%s'\n", code);
  53.    printf("Input: '%s'\n", input);
  54.    run(code, strlen(code), 0, &data_ptr, &input_ptr, &output_ptr, 0);
  55.    printf("Output: '%s'\n", output);
  56.  
  57.    free(data);
  58.  
  59.    return output;
  60. }
  61.  
  62. int main()
  63. {
  64.    char *r1 =brain_luck(",[.[-],]", "test");
  65.    printf("Result1: '%s'\n\n", r1);
  66.    free(r1);
  67.  
  68.    char *r2 =brain_luck("++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.", "not used");
  69.    printf("Result2: '%s'\n\n", r2);
  70.    free(r2);
  71.  
  72.    char *r3 =brain_luck(",[.[-],]", "test");
  73.    printf("Result3:' %s'\n\n", r3);
  74.    free(r3);
  75.  
  76.    char *r4 =brain_luck(",+[-.,+]", "huita");
  77.    printf("Result4: '%s'\n\n", r1);
  78.    free(r4);
  79. }
  80.  
Success #stdin #stdout 0s 9416KB
comments (?)
stdin
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Standard input is empty
stdout
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Code: ',[.[-],]'
Input: 'test'
Output: 'test'
Result1: 'test'

Code: '++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.'
Input: 'not used'
Output: 'Hello World!
'
Result2: 'Hello World!
'

Code: ',[.[-],]'
Input: 'test'
Output: 'test'
Result3:' test'

Code: ',+[-.,+]'
Input: 'huita'
Output: 'huita'
Result4: 'huita'
https://ideone.com/SHTWFd
language:
C (gcc 8.3)
created:
8 years ago
visibility:
secret

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