title: Do while loop in C or C++ for multiple inputs
body: <p>Following is the code snippet i'm working, although I need 4 values for my input, until the user types correct value, it should keep asking, any inputs on the same
  Thanks in advance</p>
  
  <pre><code>#include&lt;stdio.h&gt;
  #include&lt;math.h&gt;
  
  int
  main(int argc, char *argv[])
  {
          int days;
          float peny;
  
          do{
                  printf("Enter Number of days: ");
                  scanf("%d", &amp;days);
          }
          while ((days != 28) || (days != 29) ||(days != 30) ||(days != 31));
          printf("Number of days are %d", days);
  
  
  }
  </code></pre>