Error LNK2019 and Fatal error LNK1120: 1 unresolved externals
Hello,
I've been trying to find a solution to this problem, but none of them have worked so far. I know which line of code is causing the error, but not how to stop it.
I google searched for a solution, and tryed a bunch of things, such as making sure my program was a 32console application, and I was calling the header file correctly, as well as trying to find what it was that wasn't linking, but I don't have a lot of experiance, and whatever I'm missing, I can't seem to find it.
Error Message:
1>------ Build started: Project: annoting, Configuration: Debug Win32 ------
1>Main.obj : error LNK2019: unresolved external symbol "int __cdecl Equation(char)" (?Equation@@YAHD@Z) referenced in function _main
1>C:\Users\User\Documents\Visual Studio 2010\Projects\annoting\Debug\annoting.exe : fatal error LNK1120: 1 unresolved externals
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
main.cpp
Code:
#include <iostream>
#include <string>
#include <conio.h>
#include <time.h>
#include "functions.h"
using namespace std;
typedef struct node{
int num1, num2;
int data;
node *next;
};
int Equation(char oper);
int main(){
int enemies=30, age, result, guess, score=0;
string username;
char mode;
node *head=NULL;
node *temp;
temp=(node*)malloc(sizeof(node));
cout<<"Please enter your first name: \t";
cin>>username;
cout<<"Please enter your age: \t";
cin>>age;
mode =1;
int i=enemies;
while(i>0){
temp->data=Equation(mode);//This is the line I have to take out inorder for the code to compile.
temp->next=head;
head=temp;
i--;
}
cin>>guess;
temp=temp->next;
result=temp->data;
if(guess==result){
enemies=enemies-1;
score=score+1;
cout<<"\nThere are "<<enemies<<" enemies left!\n\tYour score is "<<score<<"!\n";
}
else{
cout<<"\nThe correct answer was "<<result<<"\n";
}
_getch();
return 0;
}
Functions.cpp
Code:
#include <iostream>
#include <string>
#include <time.h>
#include <conio.h>
#include "functions.h"
using namespace std;
int demon::Equation(char oper){
int int_1, int_2, result;
srand(time(NULL));
int_1=1+rand()%5;
int_2=1+rand()%5;
if(oper='1'){
result = int_1+int_2;
cout<<int_1<<"+"<<int_2<<"=\t";
}
else{
result = int_1-int_2;
cout<<int_1<<"-"<<int_2<<"=\t";
}
return result;
}
functions.h
Code:
#ifndef Guy_H_
#define Guy_H_
#include <iostream>
#include <string>
#include <conio.h>
#include <time.h>
using namespace std;
class Guy{
protected:
bool live;
public:
int distance;
};
class demon: public Guy{
private:
int answer;
char oper;
public:
int Equation(char oper);
};
#endif
I am running Microsoft Visual Studios 2010 Express
Any ideas of what might be causing the problem would help. Thank you.
