title: error invalid conversion from 'float*' to 'int' [-fpermissive]
body: <p>Ok so, i'm trying to covnert some number into others via function. The vector "tempc" contains 7 celsius numbers. The type "tempf" will contain fahrenheit. But i get this error in the title "error invalid conversion from 'float*' to 'int' [-fpermissive]". I'm new to programming , so i'm kinda really newbie. Sorry for the code but it's in italian </p>
  
  <pre><code>#include &lt;iostream&gt;
  using namespace std;
  
  //dichiarazione variabili e vettori
  float tempc[7] = {23,25,22,19,18,20,16};
  float tempf[7];
  const int MAX_GRADI = 7;
  
  //funzione conversione
  int ConversioneInF ()
  {
      for (int i=0;i&lt;MAX_GRADI;i++)
          tempf[i]=(9/5)*tempc[i]+32; //C in F
      return tempf;
  
  }
  
  int main () 
  {
      ConversioneInF();
      for (int i=0;i&lt;MAX_GRADI;i++)
          cout&lt;&lt;"La temperatura in fahrenheit e' :"&lt;&lt;tempf[i]&lt;&lt;endl;
  
      return 0;
  }
  </code></pre>