Question

作为Bitdegree学习坚固课程的一部分。我被要求做以下事情：

以允许设置名称

2.创建一个名为increaseCounter的新函数，只要调用它就会将计数器的值增加10

我已经尝试了多项设置名称，但有很多问题，我真的很感激，如果有人可以帮我解决这个问题，它是如此基本但由于某种原因没有任何工作:(。这是当前的代码

pragma solidity ^0.4.16;

contract FunctionTest {
bool public foo = true;
string public name;
uint256 public counter = 0;

function setName() public {
    //
}

function writeToStorage() {
    foo = !foo;
}

function readFromStorageConstant() public constant returns (bool) {
    return foo;
}

function readFromStorageView() public view returns (bool) {
    return foo;
}

}

Answer 1

出于某种原因，它需要变量＆＃39; name＆＃39;要初始化为字符串以使其提交。

pragma solidity ^0.4.16;

contract FunctionTest {
  bool public foo = true;
  string public name="ChuckNorris";
  uint256 public counter = 0;

  function setName(string _name) public {
    name = _name;
  }

  function increaseCounter() public {
    counter += 10;
  }

  function writeToStorage() {
    foo = !foo;
  }

  function readFromStorageConstant() public constant returns (bool) {
    return foo;
  }

  function readFromStorageView() public view returns (bool) {
    return foo;
  }
}

Answer 2

确保您同时回答了问题的两个部分。由于本课程中的某些原因，setName（）函数将不会显示您已经正确完成了该函数，直到您完成了gainCounter（）函数。以下是解决方案，可以帮助我进一步发展。

pragma solidity ^0.4.16;

contract FunctionTest {
  bool public foo = true;
  string public name;
  uint256 public counter = 0;

  function setName(string _name) public {
    name = _name;
  }

  function increaseCounter() public {
    counter += 10;
  }

  function writeToStorage() {
    foo = !foo;
  }

  function readFromStorageConstant() public constant returns (bool) {
    return foo;
  }

  function readFromStorageView() public view returns (bool) {
    return foo;
  }

  funciton increaseCounter() {
    counter += 10; } 
}

Answer 3

应该非常简单......

pragma solidity ^0.4.16;

contract FunctionTest {
  bool public foo = true;
  string public name;
  uint256 public counter = 0;

  function setName(string _name) public {
    name = _name;
  }

  function increaseCounter() public {
    counter += 10;
  }

  function writeToStorage() {
    foo = !foo;
  }

  function readFromStorageConstant() public constant returns (bool) {
    return foo;
  }

  function readFromStorageView() public view returns (bool) {
    return foo;
  }
}

Solidity setName函数编程（BitDegree）

3 个答案: