Default Value?

[micahcujo]

Hi i am making a program that will ask the user to enter in a price for the days that they shopped on the 12 days of xmas. my question is, what if the user did not shop on day 5, but shopped on day 1 and 2.
i have tried if statements and when i do it just spits out the rest of my code and says "this day cannot be initialized". here is my code. i would like to know how to input a default value so it can add up all the numbers entered. i am a beginner


#include <iostream>
#include<cmath>

using namespace std;

int main() {

//Declare Variables
float PatridgeTree = 204.99 *1;
float TwoTurtle = 125 *2;
float ThreeHens = 165 *3;
float FourBirds = 519.96 *4;
float FiveRings = 750 *5;
float SixGeese = 210 *6;
float SevenSwans = 7000 *7;
float EightMaids = 58 *8;
float NineLadies = 6294 *9;
float TenLords = 4767 *10;
float ElevenPipers = 2562 *11;
float TwelveDrummers = 2776 *12;
float total;

//Declare Your Variables
float YOURpatridgetree;
float YOURTwoTurtle;
float YOURThreeHens;
float YOURFourBirds;
float YOURFiveRings;
float YOURSixGeese;
float YOURSevenSwans;
float YOUREightMaids;
float YOURNineLadies;
float YOURTenLords;
float YOURElevenPipers;
float YOURTwelveDrummers;
float YOURtotal;

cout << "12 DAYS OF CHRISTMAS!" << endl;
cout << "--------------------------"<< endl;
system ("pause");
cout << endl;

cout << "Drummers = $2,776. Pipers = $2,562. Lords = $4,767. Ladies = $6,294." << endl;
cout << "Maides = $58. Swans = $7,000. Geese = $210. Rings = $750." << endl;
cout << "Birds = $519.96. Hens = $165. Turtles = $125." << endl;
cout << "Pear tree and Patridge = $204.99." << endl << endl;
system ("pause");

cout << endl << "Day 1) 1* Patridge Tree";
cout << endl << "\t= $" << PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURpatridgetree;

cout << endl << "Day 2) 2* Turtles + 1* PatridgeTree";
cout << endl << "\t= $" << TwoTurtle + PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURTwoTurtle;

cout << endl << "Day 3) 3* Hens + 2* Turtles + 1* PatridgeTree";
cout << endl << "\t= $" << ThreeHens + TwoTurtle + PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURThreeHens;

cout << endl << "Day 4) 4* Birds 3* Hens + 2* Turtles + 1* PatridgeTree";
cout << endl << "\t= $" << FourBirds + ThreeHens + TwoTurtle + PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURFourBirds;

cout << endl << "Day 5) 5* Rings 4* Birds 3* Hens + 2* Turtles + 1* PatridgeTree";
cout << endl << "\t= $" << FiveRings + FourBirds + ThreeHens + TwoTurtle + PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURFiveRings;

cout << endl << "Day 6) 6* Geese 5* Rings 4* Birds 3* Hens + 2* Turtles + 1* PatridgeTree";
cout << endl << "\t= $" << SixGeese + FiveRings + FourBirds + ThreeHens + TwoTurtle
+ PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURSixGeese;

cout << endl << "Day 7) 7* Swans 6* Geese 5* Rings 4* Birds 3* Hens + 2* Turtles";
cout << endl << "\t+ 1* PatridgeTree";
cout << endl << "\t= $" << SevenSwans + SixGeese + FiveRings + FourBirds + ThreeHens
+ TwoTurtle + PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURSevenSwans;

cout << endl << "Day 8) 8* Maids 7* Swans 6* Geese 5* Rings 4* Birds 3* Hens + 2* Turtles";
cout << endl << "\t+ 1* PatridgeTree";
cout << endl << "\t= $" << EightMaids + SevenSwans + SixGeese + FiveRings + FourBirds +
ThreeHens + TwoTurtle + PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOUREightMaids;

cout << endl << "Day 9) 9* Ladies 8* Maids 7* Swans 6* Geese 5* Rings 4* Birds 3* Hens";
cout << endl << "\t+ 2* Turtles + 1* PatridgeTree";
cout << endl << "\t= $" << NineLadies + EightMaids + SevenSwans + SixGeese +
FiveRings + FourBirds + ThreeHens + TwoTurtle + PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURNineLadies;

cout << endl << "Day 10) 10* Lords 9* Ladies 8* Maids 7* Swans 6* Geese 5* Rings 4* Birds";
cout << endl << "\t3* Hens + 2* Turtles + 1* PatridgeTree";
cout << endl << "\t= $" << TenLords + NineLadies + EightMaids + SevenSwans
+ SixGeese + FiveRings + FourBirds + ThreeHens + TwoTurtle + PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURTenLords;

cout << endl << "Day 11) 11* Pipers 10* Lords 9* Ladies 8* Maids 7* Swans 6* Geese 5* Rings";
cout << endl << "\t4* Birds 3* Hens + 2* Turtles + 1* PatridgeTree";
cout << endl << "\t= $" << ElevenPipers + TenLords + NineLadies + EightMaids + SevenSwans
+ SixGeese + FiveRings + FourBirds + ThreeHens + TwoTurtle + PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURElevenPipers;

cout << endl << "Day 12) 12* Drummers 11* Pipers 10* Lords 9* Ladies 8* Maids 7* Swans 6* Geese";
cout << endl << "\t5* Rings 4* Birds 3* Hens + 2* Turtles + 1* PatridgeTree";
cout << endl << "\t= $" << TwelveDrummers + ElevenPipers + TenLords + NineLadies +
EightMaids + SevenSwans + SixGeese + FiveRings + FourBirds + ThreeHens + TwoTurtle
+ PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURTwelveDrummers;

total = PatridgeTree + TwoTurtle + ThreeHens + FourBirds + FiveRings +
SixGeese + SevenSwans + EightMaids + NineLadies + TenLords + ElevenPipers +
TwelveDrummers;

YOURtotal = YOURpatridgetree + YOURTwoTurtle + YOURThreeHens + YOURFourBirds + YOURFiveRings +
YOURSixGeese + YOURSevenSwans + YOUREightMaids + YOURNineLadies + YOURTenLords + YOURElevenPipers +
YOURTwelveDrummers;;

cout << endl << "Total Price of 12 Days:" << endl;
cout << "\t=" << total << endl;
cout << endl << "Your Total Price of 12 Days:" << endl;
cout << "\t=" << YOURtotal << endl << endl;

return 0;
}

[SamuelAdams]

I'm not sure what your asking, when I type 1 or 0 for any cin input, it seems to work for me.

you might try float YOURpatridgetree=0;


If your checking for a <Enter> being typed in, you may need to create

string userinput;
cin >> string;
if (string.empty()) {
    /* ... nothing entered ... */
   // Set default value.
}
else
{
// Convert string to float
YOURpatridgetree=convertedstring;
}

[micahcujo]

Thank you for responding.
For example after the day 1.

cout << endl << "Day 1) 1* Patridge Tree";
cout << endl << "\t= $" << PatridgeTree << endl;
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURpatridgetree;

//would i put an if statement here?

Before I had,

cout << endl << "Day 1) 1* Patridge Tree";
cout << endl << "\t= $" << PatridgeTree << endl;
cout << "\tEnter Your Price By pressing 1, otherwise press 2 to continue" << endl;
int answer;

If (answer ==1)
cout << "\tEnter Your Price" << endl;
cout << "\t= $";
cin >> YOURpatridgetree;
If (answer ==2)
// can you help me with the default value here?
// or is there a command that the user just presses enter after he inputs a 2?

//This is were i was stuck, i want to input the default value of 0 and then continue on to day 2. and ask the same question for day 2.