Question

#include <iostream>
#include <iomanip>
#include <cstdlib>
#include <fstream>
#include <string>
#include <vector>
#include <sstream>
using namespace std;

void DisplayMenu()
{
   cout << "1. E games\n";
   cout << "2. T games\n";
   cout << "3. M games\n";
   cout << "4. Total Games\n";
   cout << "5. Exit\n";

}
double total(double egames, double tgames, double mgames)
{
   int totalgames = egames + tgames + mgames;
   cout << "There are " << totalgames << " games\n";
   return totalgames;
}
double Egames(double egames, double tgames, double mgames)
{
   double Egames;
   Egames = egames/(egames+tgames+mgames);
   cout << "There are " << Egames << " E games\n";
   return Egames;

}
double Tgames(double egames, double tgames, double mgames)
{
   double Tgames;
   Tgames = tgames/(egames + tgames + mgames);
   cout << "There are " << Tgames << " T games\n";
   return Tgames;

}
double Mgames(double egames, double tgames, double mgames)
{
   double Mgames;
   Mgames = mgames/(egames + tgames + mgames);
   cout <<"There are " << Mgames << " M games\n";
   return Mgames;

}
int main()
{
   int choice;
   double egames;
   double tgames;
   double mgames;
   int totalgames;
   ofstream someFile("text_file.txt");
   someFile << "E games\t";
   someFile << "T games\t";
   someFile << "M games\n";
   cout << "Enter number of E games\n";
   cin >> egames;
   someFile << egames;
   someFile << "\t\t";
   cout << "Enter number of T games\n";
   cin >> tgames;
   someFile << tgames;
   someFile << "\t\t";
   cout << "Enter number of M games\n";
   cin >> mgames;
   someFile << mgames;
   someFile << "\t";
   DisplayMenu();
   cin >> choice;
   someFile.close();

   for (; choice >= 1 && choice <= 5;)
   {
       if (choice == 1)
           Egames(egames, tgames, mgames);
       cout << "\n";
       if (choice == 2)
           Tgames(egames, tgames, mgames);
       cout << "\n";
       if (choice == 3)
           Mgames(egames, tgames, mgames);
       cout << "\n";
       if (choice == 4)
           total(egames, tgames, mgames);
       cout << "\n";
       if (choice == 5)
           exit(0);
       DisplayMenu();
       cin >> choice;
   }

   ifstream file;

   file.open("text_file.txt");

   string line;

   int arr[1000][3] = { 0 };

   vector<int> temp;

   int i = 0;
   int check = 1;
   while (getline(file, line))
   {
       temp.clear();

       if (check >= 2)
       {

           stringstream s(line);

           while (getline(s, t, ' '))
           {
               temp.push_back(stoi(t));
           }

           arr[i][0] = v[0];
           arr[i][1] = v[1];
           arr[i][2] = v[2];

           i++;
       }
       check++;
   }
}

I have 3 errors and need help

no instance of overloaded function matches the argument list argument types are: (std::stringstream, , char)

identifier t is undefined

identifier v is undefined

where/how do i fix these

Answer 1

• Firstly, t variable used in line number 118 has to defined. since this is string, define it as string t.
• next, in line numbers 123, 124 and 125, a variable v is used. I infer that you expect the three game values in temp to be stored in this array. so, change v to temp.
• Also, the first line of text_file.txt contains header. those values are not to be in stored in interger vector temp. So, the must skip this header. add, an additional getline() at the beginning of read operaiton.

modified program:

Note: the modified parts are marked in bold letters

#include <iostream>
#include <iomanip>
#include <cstdlib>
#include <fstream>
#include <string>
#include <vector>
#include <sstream>
using namespace std;

void DisplayMenu()
{
cout << "1. E games\n";
cout << "2. T games\n";
cout << "3. M games\n";
cout << "4. Total Games\n";
cout << "5. Exit\n";

}
double total(double egames, double tgames, double mgames)
{
int totalgames = egames + tgames + mgames;
cout << "There are " << totalgames << " games\n";
return totalgames;
}
double Egames(double egames, double tgames, double mgames)
{
double Egames;
Egames = egames/(egames+tgames+mgames);
cout << "There are " << Egames << " E games\n";
return Egames;

}
double Tgames(double egames, double tgames, double mgames)
{
double Tgames;
Tgames = tgames/(egames + tgames + mgames);
cout << "There are " << Tgames << " T games\n";
return Tgames;

}
double Mgames(double egames, double tgames, double mgames)
{
double Mgames;
Mgames = mgames/(egames + tgames + mgames);
cout <<"There are " << Mgames << " M games\n";
return Mgames;

}
int main()
{
int choice;
double egames;
double tgames;
double mgames;
int totalgames;
ofstream someFile("text_file.txt");
someFile << "E games\t";
someFile << "T games\t";
someFile << "M games\n";
cout << "Enter number of E games\n";
cin >> egames;
someFile << egames;
someFile << "\t\t";
cout << "Enter number of T games\n";
cin >> tgames;
someFile << tgames;
someFile << "\t\t";
cout << "Enter number of M games\n";
cin >> mgames;
someFile << mgames;
someFile << "\t";
DisplayMenu();
cin >> choice;
someFile.close();

for (; choice >= 1 && choice <= 5;)
{
if (choice == 1)
Egames(egames, tgames, mgames);
cout << "\n";
if (choice == 2)
Tgames(egames, tgames, mgames);
cout << "\n";
if (choice == 3)
Mgames(egames, tgames, mgames);
cout << "\n";
if (choice == 4)
total(egames, tgames, mgames);
cout << "\n";
if (choice == 5)
exit(0);
DisplayMenu();
cin >> choice;
}

ifstream file;

file.open("text_file.txt");

string line;
getline(file, line);
int arr[1000][3] = { 0 };

vector<int> temp;

int i = 0;
int check = 1;
while (getline(file, line))
{
temp.clear();

if (check >= 2)
{

stringstream s(line);
string t;
while (getline(s, t, ' '))
{
temp.push_back(stoi(t));
}

arr[i][0] = temp[0];
arr[i][1] = temp[1];
arr[i][2] = temp[2];

i++;
}
check++;
}
}

sample input and output:

Enter number of E games 5 Enter number of T games 4 Enter number of M games 2 1. E games 2. I games 3. M games 4. Total Games 5. Exit 1 There are 0.454545 E games 1. E games 2. I games 3. M games 4. Total Games 5. Exit 2

There are 0.363636 T games 1. E games 2. T games 3. M games 4. Total Games 5. Exit 3 There are 0.181818 M games 1. E games 2. T games 3. M games 4. Total Games 5. Exit 4

There are 0.181818 M games 1. E games 2. T games 3. M games 4. Total Games 5. Exit 4 There are 11 games 1. E games 2. I games 3. M games 4. Total Games 5. Exit 5