[求助]关于类的两个同样的问题，快郁闷死了，求助
错误提示：不能在返回类型中定义新类型，Invoice定义的末尾可能缺少一个分号，为构造函数指定返回值无效。
写的另外一个代码也所这问题，到底是怎么回事呢？

//3.13cpp

#include <iostream>

#include <string>
using std::string;

#include "3.13.h "

Invoice::Invoice(string code2, string name2, int quatity2, int price2)
{
setcode(code2);
setname(name2);
setquatity(quatity2);
setprice(price2);
}

void Invoice::setcode(string code2)
{
code=code2;
}

void Invoice::setname(string name2)
{
name=name2;
}

void Invoice::setquatity(int quatity2)
{
quatity=quatity2;
}

void Invoice::setprice(int price2)
{
price=price2;
}

string Invoice::getcode()
{
return code;
}

string Invoice::getname()
{
return name;
}

int Invoice::getquatity()
{
return quatity;
}

int Invoice::getprice()
{
return price;
}

int Invoice::getInvoiceAmount(int quatity, int price)
{
int amount;
amount=quatity*price;
return amount;
}

[解决办法]
int Invoice::getInvoiceAmount(int quatity, int price)
{
int amount;
amount=quatity*price;
return amount;
}
改为：
int Invoice::getInvoiceAmount(int quatity, int price)
{
return(quatity*price);

}
试试
[解决办法]
把类体的代码贴出来啊