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I have a error with a nodeType. I believe it is just one line. The error says "[Linker error] undefined reference to `insert(nodeType*,std::basic_ifstream<char,std::char_traits"
and "Id returned 1 exit status"


This line is the part of code that i believe is wrong.

nodeType *insert(nodeType *list, ifstream& inFile);
#include <iostream>
#include <string>
#include <fstream>

using namespace std;

struct surf_info
{
string domain;
string ip;
int counter; 
};

typedef surf_info infoType ; 

struct nodeType
{
infoType info;
nodeType *link;
};



void header ();
nodeType *insert(nodeType *list, ifstream& inFile);
void modify(nodeType *list, ifstream& inFile);
void remove(nodeType *list, ifstream& inFile);
void find(nodeType *list, ifstream& inFile);
void print(nodeType *list);
void print_zero(nodeType *list );
void print_huge (nodeType *list);
void print_file(nodeType *list);

int main()
{


char command;//I,M,R,F,P;
ifstream inFile;
string file;
nodeType *line;

header ();
cout<<"Please enter a file you would like to use..."<<endl;
cin>>file;

inFile.open(file.c_str());


if(!inFile)
{
cout << "\n\nError! - Invalid Filename! (1)\n\n";
system ("pause");
return 1;
}

else
{
int count=0;
inFile>>command;

line=NULL;


while ( command != 'X')
{ 
cout << command<<endl;
if (command =='I'){

line= insert (line, inFile);

//inFile >> temp.domain >>temp.ip;
//add to end of the array // make sure count is set zero
}
else if ( command =='M'){

modify (line,inFile);

//inFile >> temp.domain >> temp.ip;
//change ip of domain to newIP
//message if item is not in the array
//increment the counter
}
else if (command =='R'){

remove(line,inFile);

//inFile >> temp.domain;
//remove entry with that domain name from the array 
//message if item is not in the array 
}
else if (command =='F'){

find (line, inFile);

//inFile >> temp.domain;
//find entry with indicated domain name and print the ip
//increment the counter
//message if item is not in the array
}
else if (command =='P'){

print(line);

//print the array 
} 

inFile >> command; 
} 

}

cout<<endl<<endl;

print(line);
cout<<endl;

print_zero(line);
cout<<endl;

print_huge (line);
cout<<endl;

print_file(line);


system("pause");
return 0;
}
//----------------------------------------------------------------------------------
void header ()
{

cout<<"Source file: To use link list with Project 4"<<endl;
cout<<"Name: Chris CUmmings"<<endl;
cout<<"Date: 4/18/2010 "<<endl;
cout<<"Lab CRN: 10945 "<<endl;
cout<<"==================================================================="<<endl;


}
//----------------------------------------------------------------------------------
nodeType *in (nodeType *list, ifstream& inFile)
{
nodeType *flap;

flap= new nodeType;

inFile >> flap->info.domain >>flap->info.ip; 

flap->info.counter=0;

flap->link=NULL;

cout<<flap->info.domain<<" "<<flap->info.ip<<endl;

flap->link=list;
list =flap;
return list; 
}
//----------------------------------------------------------------------------------
//
void modify (nodeType *list, ifstream& inFile)
{

nodeType *updata;
string name1,name2;
bool found = false;

inFile >> name1>> name2; 

cout<<name1<<name2<<endl;

updata = list;


while (updata != NULL)
{ 

cout<<updata->info.domain<<endl;
if(updata->info.domain==name1){

updata->info.ip =name2;
cout << updata->info.ip;
updata->info.counter++;
found=true;
}
updata=updata->link;
} 
cout << endl;

if(found==false)
cout<<"Did not find!"<< name1<< endl;


}
//----------------------------------------------------------------------------------
void remove(nodeType *list, ifstream& inFile)
{
nodeType *current;
nodeType *past;
string name;

inFile >> name;

cout<<name<<endl;


current = list;

if(current->info.domain==name)
list=current->link;

else
{
past=list;
current=current->link;

while (current != NULL)
{
if(current->info.domain==name)
{
past->link=current->link;

}
past=current;
current=current->link;

}
cout << endl;

}

}
//---------------------------------------------------------------------------------
void find (nodeType *list, ifstream& inFile)
{
nodeType *current;
string name;
bool found = false;

inFile >> name; 

cout<<name<<endl;

current = list;


while (current != NULL)
{
if(current->info.domain==name){
cout << current->info.ip;
current->info.counter++;
found=true;
}
current=current->link;
} 
cout << endl;

if(found==false)
cout<<"Can not find!!!"<<endl;

}
//---------------------------------------------------------------------------------
void print(nodeType *list)
{
nodeType *current;
current = list;


while (current != NULL)
{
cout<< current->info.domain<<" "<< current->info.ip<<" "<< current->info.counter<<endl;


// cout<<current->link;


current=current->link;
}

}

//--------------------------------------------------------------------------------
void print_zero(nodeType *list )
{
nodeType *current;

current=list;

cout<<"List entries with a zero counter:"<<endl;

while(current!=NULL)
{
if(current->info.counter==0)
{
cout<<current->info.counter;
current=current->link;
}
else
current=current->link;
}

}
//-------------------------------------------------------------------------------
void print_huge (nodeType *list)
{
int file=0;
nodeType *current;
nodeType *big;
current=list;

cout<<"List entry with the largest counter:"<<endl;

while(current!=NULL)
{
if(current->info.counter>file)
{
big=current;
file=current->info.counter;
current=current->link;
}
else
current=current->link;
}

cout<<big->info.domain<<" "<<big->info.ip<<" "<<big->info.counter<<endl;


}
//-------------------------------------------------------------------------------
void print_file(nodeType *list){


ofstream outFile;

outFile.open("Cummings.txt");

outFile<<"Source file: To use link list with Project 4"<<endl;
outFile<<"Name:"<<endl;
outFile<<"Date: "<<endl;
outFile<<"Lab CRN: "<<endl;

outFile<<endl;

outFile<<"Final List:"<<endl;

nodeType *current;
current = list;


while (current != NULL)
{
outFile<<"Domain : "<<current->info.domain<<endl;
outFile<<"IP address: "<<current->info.ip<<endl;
}


outFile.close();

}
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Last Post by r.stiltskin
0

Your function prototype says the name of the function is "insert", but in the function definition on line 143 it's just "in".

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