When I run the follwing code:
#include <iostream.h>
#include <string.h>
#include <vector.h>
#include <fstream.h>
using std::string;
using std::vector;
void exchange(vector <int> &array,vector<string>&array1);
void main()
{
ifstream fin,f2,f3,f4;
//First name input
vector <string> fname(25);
fin.open("firstname.dat", ios :: in);
for( int i= 0;i<25;i++)
fin>>fname[i];
fin.close();
//Second name input
vector <int> fnum(25);
f2.open("firstnum.dat", ios :: in);
for(int i= 0;i<25;i++)
f2>>fnum[i];
f2.close();
//Third Name
exchange(fnum,fname);
vector <string> lname(25);
f3.open("lastname.dat", ios :: in);
for( int i= 0;i<25;i++)
f3>>lname[i];
f3.close();
//Forth Name
vector <int> lnum(25);
f4.open("lastnum.dat", ios :: in);
for( int i= 0;i<25;i++)
f4>>lnum[i];
f4.close();
exchange(lnum,lname);
for(int i=0;i<25;i++)
cout<<fname[i]<<'\t'<<lname[i]<<'\t'<<lnum[i]<<endl;
}
void exchange(vector <int> &array,vector<string>&array1)
{
int i, j;
int temp; // holding variable
string temp1;
int arrayLength = array.length();
for (i=0; i< (arrayLength -1); i++) // to represent element to be compared
{
for(j = (i+1); j < arrayLength; j++) // to represent the rest of the elements
{
if (array[i] < array[j])
{
temp= array[i]; // swap
array[i] = array[j];
array[j] = temp;
temp1= array1[i]; // swap
array1[i] = array1[j];
array1[j] = temp;
}
}
}
return;
}WHen I run it says "Error: undefined identifier 'length'", it is also highlighted in green above
please help the files used are attached below