class Foo {
    
    int b = 9;
    int foo( int a ) {
        // Try swapping these two next lines; note the differing error message.
        a = b;
        int b=b+1;
        b = 5;
        
        
        //int c;
        for (int c = 0;  c < 3;  ++c ) {
            //int c;
            c = 9;
            }
         
        //return c;
        return -99;
        }
    
    
        
        
    }