Thread: Initializing the class member in class function gives me wrong output

why does the output of value of b = 1 ?

I have below code:

Code:

class test
{
	int a;
	public:
	int b;
	int geta();
};

int test::geta()
{
   a=100;	b=200; return a;
}

int main()
{
	test obj;
	cout<< "value of a:" <<obj.geta() <<" value of b:" <<obj.b <<'\n';
	return 0;
}