将If语句转换为Switch

Question

我有这个If语句,我想将它们转移到Case-Switch

这是我的if Stataments:

if (rResponse.ErrorCode[0] == 0x20 && rResponse.ErrorCode[1] == 0x03)
    ErrorMsg = "COMM_FRAME_ERROR";
if (rResponse.ErrorCode[0] == 0x20 && rResponse.ErrorCode[1] == 0x04)
    ErrorMsg = "JAM";
if (rResponse.ErrorCode[0] == 0x20 && rResponse.ErrorCode[1] == 0x05)
    ErrorMsg = "NO_CARD";

我怎样才能做到这一点？

Answer 1

if (rResponse.ErrorCode[0] == 0x20) {
  switch(rResponse.ErrorCode[1]) {
    case 0x03:
      ErrorMsg = "COMM_FRAME_ERROR";
      break;
    case 0x04:
      ErrorMsg = "JAM";
      break;
    case 0x05:
      ErrorMsg = "NO_CARD";
      break;
  }
}