How to set local variable in switch?

Question

C++ / C#

I make a simple design

public int Test(){
  string yx1, yx2, yx3;
    foreach(KeyValuePair<string, Cell> kv in Cells){
      Cell obj = kv.Value;
      int x = obj.x;
      int y = obj.y;
      for(int n = 0; n < 8; ++n){
        switch(n){
          case 0: yx3 = y+"-"+(x+1); break;
          case 1: yx3 = y+"-"+(x-1); break;
          ..........................................................................
          }
       Debug.Log(yx3);
..........................................................................

that is, I immediately set the local variables yx1, yx2, yx3 in the method, then I redefine them in the loop and switch, I try to display the result in the debug, but I get an error

error CS0165: Use of unassigned local variable 'yx3'

they say yx3 is not defined, what is the reason?

Answer 1

The fact that she lives only inside the switch. And for some reason you are pulling it outside its aisles.