Multiple User Input from single scanf

Hi,

How do we get multiple user input in a single scanf. Is it OK:

Code:

scanf("%f %d", &a, &b);

?

Also, using a switch statement, is it possible to enter all statements in braces except break?

e.g.

Code:

switch ( operator ) {
       case 'S':
       {
       statement;
       statement;
       }
       break;
}

?