由於小妹我專題要寫出一份智慧合約，但在compile的部分有些地方卡住好幾天了，看了幾篇iT邦上的教學文仍然有些不懂，所以上來求助大家的幫助QQ

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以上看起來是變數名稱出問題，但改了也不行...

上面這個我就不知道問題在哪了...

麻煩各位大神幫忙了!

補上程式碼，照著二樓的修正後剩兩個地方了!謝謝~

pragma solidity >=0.4.22 <0.8.8;

contract sl{
address own;
address plateform;
address debit; //借款人
uint numcredit=0; //投資人
uint interest; //利息
uint expirydate; //貸款期限
uint amount; //貸款金額
uint rating; //信用評分
uint period; //分期
uint periodcount; //剩餘分期數
uint periodamount; //月收益
uint periodrepay; //每月還款金額
uint benefit; //投資人收益

//投資人
struct Investor{
string name;
address ethereum_address;
uint256 iamount;
uint256 benefit;
uint256 periodamount;
}
mapping(uint =>Investor)public Investors;

//借款人
struct Borrower{
string name;
address ethereum_address;
uint amount;
uint rating;
uint periodrepay;
uint periodcount;
}
mapping(uint=>Borrower) public Borrowers;

//抵押品
struct Collateral{
address own;
string location;
string buildID;
string use;
string storey;
string space;
string locateID;
}
mapping(uint=>Collateral)public asset;

LendingState lendingState = LendingState.Initial;
enum LendingState{
Initial,
Running,
Success,
Repayment,
Fail
}

function smartloan(address _debit, string memory _name, uint _loanamount, uint_period, uint_rating, string memory _location, string memory buildID, string memory _use, string memory _storey,string memory _space, string memory _locateID, uint _value)public{
own = msg.sender;
plateform = msg.sender;
debit = _debit;
amount = _amount;
rating =_rating;
period =_period;
periodcount = _period;
i = _amount /100;
periodrepay =(_amount + i ) / _period ;
asset[0] =Collateral(debit, _1ocation, _locateID, _use, _storey,_space,_locateID);
Borrowers[0] = Borrower(_name, _debit, _amount, _value, _rating,periodrepay, _period);
}

function Pledge (address _debitor, address _creditor) onlyInitialLoan public{
lien[0] = lien_info(_debitor, _creditor, msg.sender);
}

function Payfee() payable onlyInitialLoan public{
if(msg.value != (amount * 3)/100) {
revert();
}
platform.transfer(misg.value);
lendingState = LendingState.Running;
}

function Invest(string memory name, uint investAmount, uint _Numerator, uint _Denominator) payable onlyRunningLoan public{
if(investAmount * price != msg.value || investAmount > amount || msg.value > msg.sender.balance){
revert();
}
if((investAmount * _Denominator)/ _Numerator != amount){
revert();
}
beneit =(((amount * price) + i) * _Numerator)/_Denomnator;
periodamount = (benefit / period);
numcredit++;
credits[numcredit] = credit(name, msg.sender, msg.value, benefit, periodamount);
}

function lend()onlyRunningLoan onlyPlatform public{
if(this.balance >= amount){
debit.transfer(amount);
expirydate = now + 30 days;
lendingState = LendingState.Success;
}
}

function repay() payable onlySuccessfulLoan onlyDebit public{
if(now > expirydate){
revert();
}
else if(Borrower[0].periodcount = 0 ){
revertO;
}
else if( msg.value != periodrepay){
revertO;
}
else{
for(uint j=1; j <= numcredit; j++){
Investors[j].ethereum_address.transfer(Investors[i].periodamount);
}
expirydate += 30 days;
Borrowers[0].periodcount -= 1;
if (Borrowers[0].periodcount == 0){
lendingState = LendingState.Repayment;
}

}

}

function delay() payable public onlyPlatform{
asset[0].own = Platform;
for(uint j=1; j <= numcredit; j++){
credits[i].ethereum_address.transfer(Investors[i].periodamount * Borrowers[0].periodcount);
}
lendingState = LendingState.Fail;
}

//執行狀態Initial
modifier onlyInitialLoan(){
require(lendingState == LendingState.Initial);
_;
}
//執行狀態Running
modifier onlyRunningLoan(){
require(lendingState == LendingState.Running);
_;
}

//執行狀態Success
modifier onlySuccessLoan(){
require(lendingState == LendingState.Success);
_;
}
//執行狀態Repayment
modifier onlyRepaymentLoan(){
require(lendingState == LendingState.Repayment);
_;
}
//執行狀態Fail
modifier onlyFailLoan(){
require(lendingState == LendingState.Fail);
_;
}
//角色定義平台負責人
modifier onlyPlatform(){
require(msg.sender == own);
_;
}

//角色定義借款方
modifier onlyDebit(){
require (msg.sender == debit);
_;
}

}