I just started a C++ Course in my High School and when I try and compile the code I get a fatal error?

Question

Here is the error and the source code.

fatal error LNK1169: one or more multiply defined symbols found



// Mad-lib program
// Asks user to enter in a short list of nouns,
// verbs, numbers etc...  and then uses these
// entries to make a funny story.

// Program Header
// -------------------------------------------------------
#include
#include // for system ("cls")
#include  // for getch()
#include
using namespace std;

// Function Prototypes
// -------------------------------------------------------

// none

// Body of the Program
// -------------------------------------------------------

int main ()
{
//Variables that will be used to store
//the words provided by the user...
string schoolName;
string subjectOne;
string subjectTwo;
string headMaster;
string userName;
string itemOne;
string itemTwo;
string firstMonth;
int firstMonthDay;
string animal;
string secondMonth;
int secondMonthDay;
string headMistress;

//The opening title and info
cout << "MAD - LIBS!!" << endl << endl;
cout << "Provide a word or number at each" << endl;
cout << "of the following prompts..." << endl;
cout << "Your entries will be used to create" << endl;
cout << "a silly story!!" << endl << endl;
cout << "***************************" << endl << endl;

//Prompt the user for data
cout << "Enter in a famous person's last name: ";
cin >> schoolName;
cout << "What subject are you really good at? "
<< "(one word): ";
cin >> subjectOne;
cout << "What subject are you not so good at? "
<< "(one word): ";
cin >> subjectTwo;
cout << "Enter the name of your favorite pet "
<< "(one word): ";
cin >> headMaster;
cout << "Enter your first name: ";
cin >> userName;
cout << "Enter in a plural noun: ";
cin >> itemOne;
cout << "Enter in another plural noun: ";
cin >> itemTwo;
cout << "What month were you born in? "
<< "(spell it out): ";
cin >> firstMonth;
cout << "What day were you born on? "
<< "(use an integer): ";
cin >> firstMonthDay;
cout << "What is your favorite animal?: ";
cin >> animal;
cout << "What is the current month? "
<< "(spell it out): ";
cin >> secondMonth;
cout << "What is the current day? "
<< "(use an integer); ";
cin >> secondMonthDay;
cout << "Enter the first name of your best friend: ";
cin >> headMistress;

//Display the funny story using the entries
//provided by the user.
system("cls"); //Clear the screen
cout << "Here is your mad - lib!!" << endl;
cout << "****************************" << endl <cout << schoolName << "'s School of "
<< subjectOne << " and "
<< subjectTwo << endl << endl;
cout << "Headmaster:  " << headMaster << endl << endl;
cout << "Dear " << userName << "," << endl;
cout << "\tWe are pleased to inform you that you have"
<< endl;
cout << "been accepted at " << schoolName
<< "'s School of " << endl;
cout << subjectOne << " and " << subjectTwo
<< ".  Please" << endl;
cout << "find enclosed a list of all necessary "
<< itemOne << endl;
cout << "and " << itemTwo << "." << endl;
cout << "\tTerm begins on " << firstMonth << " "
<< firstMonthDay;
cout << ".  We await" << endl;
cout << "your " << animal << " by no later than "
<< secondMonth;
cout << " " << secondMonthDay << "."
<< endl;
cout << "Yours sincerely," << endl << endl;
cout << headMistress << endl;
cout << "Deputy Headmistress" << endl << endl;
getch(); //Make the program pause before
//it stops running so that the
//user can read their mad - lib
//before it disappears.

return 0;

}

Answer 1

I suspect you have a compile-time option set wrong in the IDE for the project and it's pulling in two copies of the same library. If you can cross-check the options with another, working program's set, (another student, possibly) you should be able to find the problem.



Also, turning on all compile- and link-time error messages should give you more information in the Output window.



Good luck.

Answer 2

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Answer 3

It also compile / link without errors for me on visual c++ 2005 sp1.



Did you tried to clean it and rebuild your project?

Answer 4

There is no Error. Try it in Dev C++. It runs without any errors