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针对下列程序段,需要()个测试用例可以满足语句覆盖的要求。
switch ( value )
{
  case 0:
    other = 30;
    break;
  case 1:
    other = 50;
    break;
  case 2:
    other = 300;
  case 3:
    other = other / value;
    break;
  default:
    other = other * value;
}