switch-case problem

[Sugantha Jeevankumar]

void test(byte x){
   switch(x){
      case 'a': // 1
      //case 256: // 2
      case 0: // 3
      default : // 4
      case 80: // 5
   }
}

why does the above code produce compiler errors only in line 2 and not in line 1...My reasoning is byte holds 8 bits and the char literal would occupy 16-bits...so it should give an incompatible assignment error.But it does'nt

[Vishwanath Krishnamurthi]

maybe because 'a' here is 97 in Ascii and its well within a byte-range
not sure though...

[Amit Kathpal]

yes you are right because 'a' is in limits of short range which is 0-255 so it is a legal statement. you should remember the values of ascii chars.

best of luck

[ilkin esrefli]

range of byte is -128-127. and compiler understand value as int value>127& value<-128

[Raghavan Muthu]

That's true ranchers. Whatever you put in the case statement, it should resolve to an 'int' basically.

Since the variable's value you are testing is of type byte and the value 256 at line 2 exceeds the range a byte can hold. That's why the compiler error in line 2.