Hello when I try to compile my program I get these errors:
1>funding6c.obj : error LNK2019: unresolved external symbol "void __cdecl ContributorSort(struct Contribution * const,int &)" (?ContributorSort@@YAXQAUContribution@@AAH@Z) referenced in function _main
1>C:\Users\Big Z\Desktop\program 6\Debug\program 6.exe : fatal error LNK1120: 1 unresolved externals
what could be causing this?
#include <iostream>
#include <fstream>
#include <string>
#include <iomanip>
#include <cctype>
using namespace std;
struct Contribution
{
string name;
double amount;
};
const int MAX = 25;
typedef Contribution BigSpender[MAX];
const string NAME_FILE = "names.txt";
const string CONTRIBUTION_FILE = "slush.txt";
void InitProgram( BigSpender );
void StringToLower (string& s);
void ContributorSearch ( bool& found, string searchVariable, int& donors,
int& location, BigSpender ContributionRec );
void ContributorSort( BigSpender ContributionRec, int& donors );
int main()
{
string searchVariable; // what is being searched for
int donors; // number of donors
BigSpender ContributionRec;
cout << "Welcome to the Big Spender Contributor Catalog Program."
<< endl << endl;
InitProgram(ContributionRec);
ContributorSort ( ContributionRec, donors );
cout << "Thank you for using the Big Spender Contributor"
<< " Catalog Program." << endl << endl;
return 0;
}
void InitProgram(BigSpender ContributionRec)
{
ifstream nameLog, contributionLog;
bool found;
string searchVariable,
temp;
int donors,
location;
double temp2;
nameLog.open( NAME_FILE.c_str() ); // open file
contributionLog.open( CONTRIBUTION_FILE.c_str() ); // open file
if ( !nameLog ) // test if files opened
{
cout << "The file names.txt could not be opened. Please check the file"
<< endl;
exit (EXIT_FAILURE);
}
else if ( !contributionLog )
{
cout << "The file slush.txt could not be opened. Please check the file"
<< endl;
exit (EXIT_FAILURE);
}
nameLog >> donors;
nameLog.ignore(80, '\n');
for ( int i = 0; i < donors; i++ )
{
getline( nameLog, ContributionRec[i].name );
ContributionRec[i].amount = 0.0;
}
nameLog.close();
while ( contributionLog )
{
getline( contributionLog, temp );
contributionLog >> temp2;
contributionLog.ignore(80, '\n');
ContributorSearch ( found, searchVariable, donors,
location, ContributionRec );
if (found)
{
cout << left << setw(50) << ContributionRec[location].name;
ContributionRec[location].amount = temp2 + ContributionRec[location].amount;
cout << right << setw(10) << ContributionRec[location].amount
<< endl;
}
else
{
cout << "Small Contributor";
}
}
contributionLog.close();
return;
}
void ContributorSearch ( bool& found, // true if we find it
string searchVariable, // What we are looking for
int& donors, // number of donors
int& location, // location found at in the array
BigSpender ContributionRec ) // array of
{
found = false;
int count = 0; // start at 1st element
while ( count < donors && !found )
// loop to search for the code in the codes array
{
if ( searchVariable != ContributionRec[count].name )
{
count++; // they do NOT match
}
else
{
found = true; // they do match
location = count; // is index where found
}
}
return;
}
void ContributorSort (int& donors, BigSpender ContributionRec )
// Sorts an array of book records into alphabetical order
// using the selection sort algorithm. The books array
// must be passed by reference here - why ?
// Assume here that data file is formatted to sort easily
// with no special handling except to convert
// titles to all one case; here lower is used.
{ // SortBooks
int
start, // index to first value in unsorted portion
smallest, // index to smallest value in unsorted portion
current; // used to scan array for "smallest" value
// temporary storage for value during a swap
string
copy1st, // copies of original strings
copy2nd, // to be converted to all lower case
tempSpender;
// perform numbooks - 1 passes
for (start = 0; start < (donors - 1); start++)
{
smallest = start;
// scan unsorted part of array to find smallest title
for (current = (start + 1); current < donors; current++ )
{
// copy strings and convert copies to all lower case
// why use copies ?
copy1st = ContributionRec[current].name;
copy2nd = ContributionRec[smallest].name;
StringToLower (copy1st);
StringToLower (copy2nd);
if ( copy1st < copy2nd )
smallest = current;
}
// perform one exchange of Contributor records if necessary
if (smallest != start)
{
tempSpender = ContributionRec[start].name;
ContributionRec[start].name = ContributionRec[smallest].name;
ContributionRec[smallest].name = tempSpender;
}
} // outer for loop
} // ContributorSort
void StringToLower (string& s)
/* converts string s to all lower case */
{ // StringToLower
int index, // index into the string
slen; // length of the string
slen = static_cast<int>(s.length());
for (index = 0; index < slen; index++)
s[index] = tolower(s[index]);
} // StringToLower
