Thread: infinite while loop

Let say if I put it this way, when I try to submit a char, it would have return me an error message. But I still couldn't stop the loop from looping. Do I need to flush or anything ? So that the function can stop at the scanf everytime I enter a char ?

Code:

while(sel_case != 0)
{
   if ( scanf( "%d", &sel_case ) == 1 )
  {

    switch(sel_case)
    {
          case 1:  
                        test1();
          break;
         
         ~ case 10
    }
   else
   {
       printf("Wrong input!!");
   }

}

Your loop won't stop because once the stream ( stdin in your case ) has an error it won't let you input anything in the next pass. One way would be to call
clearerr(stdin); if the input has failed.
But better still would be to use fgets() to read a line of input into a char buffer and use sscanf() to extract the data you want.
Kurt