Question

Can someone please tell me why the calculation for earnings is not coming through at the end of the program? Thank you.

//This program should tell us about streaming services

#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

int main()
{
   int choice, streams;
   double earnings;
   string song;
   string artist;
   string streamingService;
  
   const int Tidal = 0.01250;
   const int Amazon = 0.00402;
   const int Apple_Music = 0.00735;
   const int Spotify = 0.00437;
   const int Youtube = 0.00069;
      
       cout << "Which Streaming Service will you use to upload your song? \n";
       cout << "\t1: Tidal \n";
       cout << "\t2: Amazon \n";
       cout << "\t3: Apple Music \n";
       cout << "\t4: Spotify \n";
       cout << "\t5: Youtube \n\n";
       cout << "\nEnter your choice 1-5: ";
       cin >> choice;
      
       if (choice < 1 || choice > 5)
       {
           cout << "ERROR - NOT A VALID STREAMING CHOICE. THE PROGRAM WILL TERMINATE." << endl;
       }
       else
       {
      
           cin.ignore(100,'\n');
           cout << "\nWhat is the name of the Artist? ";
           getline(cin, artist);
          
           cout << "\nWhat is the name of the song? ";
           getline(cin, song);
       }
       if (choice == 1)
       {
           streamingService = "Tidal";
           cout << "\nHow many streams did " << song << " get on Tidal? ";
           cin >> streams;
          
           if (streams < 0)
           {
               cout << "ERROR - NUMBER OF STREAMS CANNOT BE NEGATIVE. PROGRAM WILL TERMINATE.";
               return 1;
           }
           else
           {
               earnings = streams*Tidal;
           }
       }
       else if (choice == 2)
       {
           streamingService = "Amazon";
           cout << "\nHow many streams did " << song << " get on Amazon? ";
           cin >> streams;
          
           if (streams < 0)
           {
               cout << "ERROR - NUMBER OF STREAMS CANNOT BE NEGATIVE. PROGRAM WILL TERMINATE.";
               return 1;
           }
           else
           {
               earnings = streams * Amazon;
           }
       }
       else if (choice == 3)
       {
           streamingService = "Apple_Music";
           cout << endl << "How many streams did " << song << " get on Apple Music? \n";
           cin >> streams;
          
           if (streams < 0)
           {
               cout << "ERROR - NUMBER OF STREAMS CANNOT BE NEGATIVE. PROGRAM WILL TERMINATE.";
               return 1;
           }
           else
           {
               earnings = streams * Apple_Music;
           }
       }
       else if (choice == 4)
       {
           streamingService = "Spotify";
           cout << endl << "How many streams did " << song << " get on Spotify? \n";
           cin >> streams;
          
           if (streams < 0)
           {
               cout << "ERROR - NUMBER OF STREAMS CANNOT BE NEGATIVE. PROGRAM WILL TERMINATE.";
               return 1;
           }
           else
           {
               earnings = streams * Spotify;
           }
       }
       else if (choice == 5)
       {
           streamingService = "Youtube";
           cout << endl << "How many streams did " << song << " get on Youtube? \n";
           cin >> streams;
          
           if (streams < 0)
           {
               cout << "ERROR - NUMBER OF STREAMS CANNOT BE NEGATIVE. PROGRAM WILL TERMINATE.";
               return 1;
           }
           else
           {
               earnings = streams * Youtube;
           }
       }
  
   cout << endl << "Song Name: " << song << endl;  
   cout << "Artist Name: " << artist << endl;
   cout << "Streaming Service: " << streamingService << endl;
   cout << "Streams: " << streams << endl;
   cout << fixed << showpoint << setprecision(2) << "Earnings: $" << earnings << endl;
   return 0;
}

Answer 1

When you declared this variable -

const int Tidal = 0.01250;
   const int Amazon = 0.00402;
   const int Apple_Music = 0.00735;
   const int Spotify = 0.00437;
   const int Youtube = 0.00069;

this are not of int type , they are double type . You have declared them as int type that why you were getting 0 in earning because it was taking only integer part as ie 0

correct way -

const double Tidal = 0.01250;
const double Amazon = 0.00402;
const double Apple_Music = 0.00735;
const double Spotify = 0.00437;
const double Youtube = 0.00069;

I have made the following code changes below and also attach output screenshots

Code -

#include <iostream>
#include <iomanip>
#include <string>

using namespace std;

int main()
{
int choice, streams;
double earnings;
string song;
string artist;
string streamingService;
//this shouldn't be int , it should be double value
const double Tidal = 0.01250;
const double Amazon = 0.00402;
const double Apple_Music = 0.00735;
const double Spotify = 0.00437;
const double Youtube = 0.00069;
  
cout << "Which Streaming Service will you use to upload your song? \n";
cout << "\t1: Tidal \n";
cout << "\t2: Amazon \n";
cout << "\t3: Apple Music \n";
cout << "\t4: Spotify \n";
cout << "\t5: Youtube \n\n";
cout << "\nEnter your choice 1-5: ";
cin >> choice;
  
if (choice < 1 || choice > 5)
{
cout << "ERROR - NOT A VALID STREAMING CHOICE. THE PROGRAM WILL TERMINATE." << endl;
}
else
{
  
cin.ignore(100,'\n');
cout << "\nWhat is the name of the Artist? ";
getline(cin, artist);
  
cout << "\nWhat is the name of the song? ";
getline(cin, song);
}
if (choice == 1)
{
streamingService = "Tidal";
cout << "\nHow many streams did " << song << " get on Tidal? ";
cin >> streams;
  
if (streams < 0)
{
cout << "ERROR - NUMBER OF STREAMS CANNOT BE NEGATIVE. PROGRAM WILL TERMINATE.";
return 1;
}
else
{
earnings = streams*Tidal;
}
}
else if (choice == 2)
{
streamingService = "Amazon";
cout << "\nHow many streams did " << song << " get on Amazon? ";
cin >> streams;
  
if (streams < 0)
{
cout << "ERROR - NUMBER OF STREAMS CANNOT BE NEGATIVE. PROGRAM WILL TERMINATE.";
return 1;
}
else
{
earnings = streams * Amazon;
}
}
else if (choice == 3)
{
streamingService = "Apple_Music";
cout << endl << "How many streams did " << song << " get on Apple Music? \n";
cin >> streams;
  
if (streams < 0)
{
cout << "ERROR - NUMBER OF STREAMS CANNOT BE NEGATIVE. PROGRAM WILL TERMINATE.";
return 1;
}
else
{
earnings = streams * Apple_Music;
}
}
else if (choice == 4)
{
streamingService = "Spotify";
cout << endl << "How many streams did " << song << " get on Spotify? \n";
cin >> streams;
  
if (streams < 0)
{
cout << "ERROR - NUMBER OF STREAMS CANNOT BE NEGATIVE. PROGRAM WILL TERMINATE.";
return 1;
}
else
{
earnings = streams * Spotify;
}
}
else if (choice == 5)
{
streamingService = "Youtube";
cout << endl << "How many streams did " << song << " get on Youtube? \n";
cin >> streams;
  
if (streams < 0)
{
cout << "ERROR - NUMBER OF STREAMS CANNOT BE NEGATIVE. PROGRAM WILL TERMINATE.";
return 1;
}
else
{
earnings = streams * Youtube;
}
}
  
cout << endl << "Song Name: " << song << endl;
cout << "Artist Name: " << artist << endl;
cout << "Streaming Service: " << streamingService << endl;
cout << "Streams: " << streams << endl;
cout << fixed << showpoint << setprecision(2) << "Earnings: $" << earnings << endl;
return 0;
}

Screenshot -