inheritance_test.sol

pragma solidity ^0.4.21;

contract A {
    uint public a = 0;
    
    function f() internal {
        a = a * 10 + 1;
        
        g();
    }
    
    function g() internal {
        a = a * 10 + 2;
    }
}

contract B is A {
    function f() internal {
        a = a * 10 + 3;
        
        super.f();
    }
    
    function g() internal {
        a = a * 10 + 4;
        
        super.g();
    }
}

contract C is B {
    function fp() public {
        super.f();
    }

    function fpA() public {
        A.f();
    }
    
    function fpB() public {
        B.f();
    }

    function reset() public {
        a = 0;
    }
}