代码::带有C++块的可见性错误很奇怪

我在C++上做了一些学术项目，使用Code：：Blocks，我得到了一些奇怪的可见性错误。

部分主文件为：

//main.cpp
#include <iostream>
#include <fstream>
#define DEFContainerSize 100
#include <string>
#include <list>
#include <sstream>
#include <cctype>
using namespace std;
#include "iteration1.cpp"
#include "iteration2.cpp"
int main(int argNum, char *args[])
{
    //Content skipped here!!
}

包含的迭代 1.cpp 包含如下定义：

部分迭代1.cpp

//Content skipped here!!
        template <class Coords, class Rad>
        struct
Circle  {
            Coords Coordinates;
            Rad    Radius;
        };
//Content skipped here!!
        template <class Coords, class Rad>
        istream
    &operator>>(istream &input, Circle<Coords,Rad> &circle)
        {
            StringFunctionAndArguments fa;
            input>>fa;
            proc_FromStringFunctionAndArguments2<Coords,Rad>
                (fa,"Circle","operator>>",circle.Coordinates,circle.Radius);
            return input;
        };
        template <class Coords, class Rad>
        ostream
    &operator<<(ostream &output, Circle<Coords,Rad> &circle)
        {
            output<<"Circle("<<circle.Coordinates<<","<<circle.Radius<<")";
            return output;
        };
//Content skipped here!!

这工作得很好。但是当我尝试在迭代2中输入类似的定义时.cpp：

//iteration2.cpp this time full file.
        template <class Coords>
        struct
Triangle
        {
            Coords Coordinates1,
                   Coordinates2,
                   Coordinates3;
        };
        template <class Coords>
        istream
    &operator>>(istream &input, Triangle<Coords> &tr)
        {
            StringFunctionAndArguments fa;
            input>>fa;
            proc_FromStringFunctionAndArguments2<Coords,Coords>
                (fa,"Triangle","operator>>",tr.Coordinates1,
                                            tr.Coordinates2);
            tr.Coordinates3 = fa.Arguments.back();
            return input;
        };
        template <class Coords>
        ostream
    &operator<<(ostream &output, Triangle<Coords> &tr)
        {
            output<<"Triangle("<<tr.Coordinates1<<
                            ","<<tr.Coordinates2<<
                            ","<<tr.Coordinates3<<")";
            return output;
        };

我收到奇怪的错误，这不应该发生：

stud1mTRPOlabs1Lab2iteration2.cpp|17|error: 'istream' does not name a type|
stud1mTRPOlabs1Lab2iteration2.cpp|30|error: 'ostream' does not name a type|
||=== Build finished: 2 errors, 0 warnings (0 minutes, 4 seconds) ===|

我仍然可以正常地将其添加到迭代 1.cpp，但我在迭代 2.cpp 中需要它。

我在Windows XP上使用Code：：Blocks 12.11，编译

mingw32-g++.exe -std=c++11 -Wall -fexceptions  -g

是时候更换 IDE 了吗？

如何解决问题？提前感谢您的回答！