scope.m1

int main() { // scope 1, nestlevel 1
    
    print("1..5\n");
    int x = 1;
    print("ok ");
    print(x);
    print(" - function-level scope\n");
    
    { // scope 2, nestlevel 2
        int y = 2;
        print("ok ");
        print(y);
        print(" - nested scope with var y.\n");
    }
    
    { // scope 3, nestlevel 2
        int y = 3;
        print("ok ");
        print(y);
        print(" - other nested scope with var y.\n");
        
    }
    
    { // scope 4, nestlevel 2
        int y = 4; // ok, 
        print("ok ");
        print(y);
        print(" - yet another nested scope with var y.\n");

    }
    int y = 5;
    print("ok ");
    print(y);
    print(" - back in function-level scope\n");

    
}