title: using bool in c (within a structure)
body: <p>I wanted to use a boolean variable in c as a flag,within a structure,but c does not have any keyword "bool" to make it possible.
  I got some relevant information here :  <a href="https://stackoverflow.com/questions/1921539/using-boolean-values-in-c">Using boolean values in C</a>
  <strong>then basically,I tried this</strong></p>
  
  <pre><code>struct bookshop
  {
      char name[20];
      char issuer[20];
      int id;
      typedef enum { false, true } flag;
  
  };
  </code></pre>
  
  <p><strong>to get the following error,on this line:"typedef enum { false, true } flag";</strong>
  Multiple markers at this line
      - expected specifier-qualifier-list before 
       ‘typedef’
      - Type 'flag' could not be resolved
      - Syntax error</p>
  
  <p>please help!
  and thanks in advance :)</p>