solidity 出现错误:TypeError: Data location must be "memory" for return

pragma solidity >=0.4.0 <0.7.0;
contract HelloWorld{
    string public stateVariable = "Hello World";
    int int1;

   function GetHelloWorld() public view returns (string  _hello){
        _hello=stateVariable;
    }

}

solidity编译出现: TypeError: Data location must be "memory" for return parameter in function, but none was given.

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2 个回答

zhou
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jc0803kevin
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  • zhou 提出于 2020-10-17 19:06

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