Run id: 91839

Main.cc: In function 'int main()':
Main.cc:8:11: error: the value of 'a' is not usable in a constant expression
   case a>=90 :
           ^
Main.cc:4:6: note: 'int a' is not const
  int a,c;
      ^
Main.cc:8:11: error: the value of 'a' is not usable in a constant expression
   case a>=90 :
           ^
Main.cc:4:6: note: 'int a' is not const
  int a,c;
      ^
Main.cc:11:11: error: the value of 'a' is not usable in a constant expression
   case a>=80 :
           ^
Main.cc:4:6: note: 'int a' is not const
  int a,c;
      ^
Main.cc:11:11: error: the value of 'a' is not usable in a constant expression
   case a>=80 :
           ^
Main.cc:4:6: note: 'int a' is not const
  int a,c;
      ^
Main.cc:14:11: error: the value of 'a' is not usable in a constant expression
   case a>=70:
           ^
Main.cc:4:6: note: 'int a' is not const
  int a,c;
      ^
Main.cc:14:11: error: the value of 'a' is not usable in a constant expression
   case a>=70:
           ^
Main.cc:4:6: note: 'int a' is not const
  int a,c;
      ^
Main.cc:17:11: error: the value of 'a' is not usable in a constant expression
   case a>=60:
           ^
Main.cc:4:6: note: 'int a' is not const
  int a,c;
      ^
Main.cc:17:11: error: the value of 'a' is not usable in a constant expression
   case a>=60:
           ^
Main.cc:4:6: note: 'int a' is not const
  int a,c;
      ^
Main.cc:4:8: warning: unused variable 'c' [-Wunused-variable]
  int a,c;
        ^
Main.cc:5:7: warning: unused variable 'b' [-Wunused-variable]
  char b;
       ^