use basic;

var a;

A := 5;
print( "A="+A);

			// A should not change here.
			// NOTE, a compiler warning should be generated.
A == "HELLO";
print( "A="+A);

A := A + 654;
print( "A="+A);

var b:=A;
A+=1; // b should not change
print(a);
print(b);