Question

A contact list is a place where you can store a specific contact with other associated information such as a phone number, email address, birthday, etc. Write a program that first takes as input an integer N that represents the number of word pairs in the list to follow. Word pairs consist of a name and a phone number (both strings). That list is followed by a name, and your program should output the phone number associated with that name.

Ex: If the input is:

3 Joe 123-5432 Linda 983-4123 Frank 867-5309 
Frank

the output is:

867-5309

Your program must define and call the following function. The return value of GetPhoneNumber is the phone number associated with the specific contact name.
string GetPhoneNumber(vector<string> nameVec, vector<string> phoneNumberVec, string contactName)

Hint: Use two vectors: One for the string names, and the other for the string phone numbers.

6.34.1: LAB: Contact list

#include <iostream>
#include <vector>
using namespace std;

/* Define your function here */

int main() {
/* Type your code here */

return 0;
}

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
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// contacts.txt (input file)

3
Joe 123-5432
Linda 983-4123
Frank 867-5309
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#include <vector>
#include <fstream>
#include <iostream>
#include <iomanip>
using namespace std;

string GetPhoneNumber(vector<string> nameVec, vector<string> phoneNumberVec, string contactName);
int main()
{
   //Declaring constants which holds input file output file names
   const string INPUTFILE="contacts.txt";
vector<string> names;
   vector<string> phones;
   string name,phone;
   int size;
     
  
string line;
// defines an input stream for the data file
ifstream dataIn;

dataIn.open(INPUTFILE.c_str());
// checking whether the file name is valid or not
if (dataIn.fail())
{
cout << "** "<<INPUTFILE<<" Not Found **";
return 1;
}
else
{
dataIn>>size;
  
//Reading each line from the input file
for(int i=0;i<size;i++)
{
   dataIn>>name>>phone;
   names.push_back(name);
   phones.push_back(phone);
  
}
dataIn.close();
cout<<"Enter name to search :";
cin>>name;
string res=GetPhoneNumber(names, phones,name);
if(res.compare("none")==0)
{
    cout<<"Contact not found"<<endl;
   }
   else
   {
      cout<<res<<endl;
   }
}

return 0;
}
string GetPhoneNumber(vector<string> nameVec, vector<string> phoneNumberVec, string contactName)
{
   for(int i=0;i<nameVec.size();i++)
   {
       if(nameVec[i].compare(contactName)==0)
       {
           return phoneNumberVec[i];
       }
   }
   return "none";
}

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Output:

_______________Could you plz rate me well.Thank You