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POC++ where to place includes
 

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  1. POC++ where to place includes
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    <p>I have a class Vehicle (vehicle.h and vehicle.cpp). Visual Studio is giving me errors if I don't put the includes inside of the header file. Why is this? In my previous 2 assignments I put the includes in the .cpp file and had no issues. Here is what I want to work but isn't:</p> <p>vehicle.h:</p> <pre><code>#ifndef VEHICLE_H #define VEHICLE_H using namespace std; class Vehicle { public: Vehicle(); Vehicle(string mfr, int cylinders, Person owner); string getManufacturer(); int getNumOfCylinders(); Person getOwner(); private: string manufacturer; int numOfCylinders; Person owner; }; #endif </code></pre> <p>vehicle.cpp:</p> <pre><code>#include &lt;iostream&gt; #include &lt;string&gt; using namespace std; #include "person.h" #include "vehicle.h" Vehicle::Vehicle() { //Initialize with defaults } Vehicle::Vehicle(string mfr, int cylinders, Person owner) { //Initialize with parameters } string Vehicle::getManufacturer() { return manufacturer; } int Vehicle::getNumOfCylinders() { return numOfCylinders; } Person Vehicle::getOwner() { return owner; } </code></pre> <p>person.h:</p> <pre><code> #ifndef PERSON_H #define PERSON_H class Person { public: //default constructor Person(); //constructor with two parameters Person(string the_name, string no); //accessor member functions string get_name() const; string getDriverLicenseNo() const; //overloaded equal operator bool operator==(const Person&amp; p); //overloaded extraction operator friend istream&amp; operator &gt;&gt; (istream&amp; in, Person&amp; p); //overloaded insertion operator friend ostream&amp; operator &lt;&lt;(ostream&amp; out, Person&amp; p); private: string name; string drivingLicenseNo; }; #endif </code></pre> <p>person.cpp:</p> <pre><code> #include &lt;iostream&gt; #include &lt;string&gt; using namespace std; #include "person.h" //default constructor Person::Person(){} //constructor with two parameters Person::Person(string the_name, string no){} //accessor member functions string Person::get_name() const { return name; } string Person::getDriverLicenseNo() const { return drivingLicenseNo; } //overloaded equal operator bool Person::operator==(const Person&amp; p) { return false; } //overloaded extraction operator istream&amp; operator &gt;&gt; (istream&amp; in, Person&amp; p) { return in; } //overloaded insertion operator ostream&amp; operator &lt;&lt;(ostream&amp; out, Person&amp; p) { return out; } </code></pre> <p>truck.h:</p> <pre><code>#include "vehicle.h" class Truck: public Vehicle { }; </code></pre> <p>truck.cpp:</p> <pre><code>#include "person.h" #include "vehicle.h" //implement truck here </code></pre> <p>Couple of errors for example:</p> <p>error C2061: syntax error : identifier 'string'</p> <p>error C2146: syntax error : missing ';' before identifier 'getManufacturer'</p> <p>error C2061: syntax error : identifier 'string' error C2535: 'Person::Person(void)' : member function already defined or declared<br> error C2146: syntax error : missing ';' before identifier 'get_name'</p> <p>error C4430: missing type specifier - int assumed. Note: C++ does not support default-int</p> <p>error C4430: missing type specifier - int assumed. Note: C++ does not support default-int</p> <p>error C2146: syntax error : missing ';' before identifier 'getDriverLicenseNo' </p>
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    1. COWhat are the errors?
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    2. COCan you please put the error messages as comments in the code, so we know which line each one is talking about?
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      1. USBen Voigt
    3. COSure, that's not a problem I guess but at this point without moving anything around I have a total of 41 errors. Is there a way to get visual studio to put it in the code somehow? The errors go away when I move the includes around so I am pretty sure that's it. I just want to understand how to do it correctly and not fight with the compiler each time.
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