title: error: ISO C forbids nested functions|
body: <pre><code>bool winner(char c,int n,char m[n][n])
  {
      if(Line(c,n,m))
          return true;
  
      if(column(c,n,m))
          return true;
  
      if(Radios1(c,n,m))
          return true;
  
      if(Radios2(c,n,m))
          return true;
  
      return false;
  }
  </code></pre>
  
  <p>and i got this error .what is the problem?</p>