智能合约之间调用msg.sender解析

 

msg.sender在构造函数中：

//构造函数
constructor() public {
    owner = msg.sender;
}

function increse(address receiver, uint amount) public{
    require( owner == receiver);
    balances[receiver] += amount;
}

在构造函数中，msg.sender等于部署该合约的地址；