C++ LNK2019 错误 : Unresolved external symbol

Question

我在为类里面指定的实验室构建/编译我的程序时遇到问题。我把代码拿给我的教授看，她只看了一眼就说她也不知道是什么导致了错误。如果我错过了直接回答这个问题的上一个问题，我深表歉意。

错误:

error LNK2019: unresolved external symbol "void __cdecl get_streams(class std::basic_ifstream<char,struct std::char_traits<char> > &,class std::basic_ofstream<char,struct std::char_traits<char> > &)" (?get_streams@@YAXAAV?$basic_ifstream@DU?$char_traits@D@std@@@std@@AAV?$basic_ofstream@DU?$char_traits@D@std@@@2@@Z) referenced in function _main

这是我目前的一些程序:

---

类声明:

void const get_streams(ifstream& ins, ofstream& ous);

主要功能:

 int main( ) 
 { 
 ifstream ins;
 ofstream ous;
 AltMoney m1, m2, sum, difference;

 get_streams(ins, ous);

 read_money(ins, m1);
 cout << "The first money is:"; 
 write_money(ous, m1);

 read_money(ins, m2);
 cout << "The second money is:"; 
 write_money(ous, m2);

 sum = m1 + m2;
 cout << "The sum is:"; 
 write_money(ous, sum);

 difference = m2 - m1;
 cout << "The difference is:"; 
 write_money(ous, difference);

 ins.close();
 ous.close();

 return 0; 
 }

类定义:

void get_stream(ifstream& ins, ofstream& ous)
{
ins.open("in_file.dat");
if(ins.fail())
    {
    cout << "Failed to open the input file. \n";
    exit(1);
    }

ous.open("out_file.dat");
if(ous.fail())
    {
    cout << "Failed to open the output file. \n";
    exit(1);
    }
}

Answer 1

get_streams() 与 get_stream() 不同....