Loop problem

Question

Please how do I stop the loop from the third line onwards. To understand what I am asking, when you run the code, enter three multiple inputs, each per line. The third output loops indefinitely, why?
Thanks in advance

Edit: A supermarket has launched a campaign offering a 15% discount on 3 items.
Write a program that takes the total price for every purchase as input and outputs the relevant discount.

Sample Input
15000
4000
6700

Sample Output
2250
600
1005

Explanation
2250 represents a 15% discount for a 15000 purchase; 600 for 4000 and 1005 for 6700 accordingly.

https://code.sololearn.com/ca25A10a24a1/?ref=app

Answer 1

this will break out of the loop
int purchaseAmount = 3;
int totalprice;
do
{
cin >> totalprice;
int discount = totalprice - (0.85*totalprice);
cout << "" << discount << endl;
purchaseamount--;
}
while( 0 < purchaseAmount);

Answer 2

#include <iostream>
using namespace std;

int main()
{
int purchaseAmount = 3;
int totalPrice;

do {
cin >> totalPrice;

//we'll use float instead of int because we don't want to round
float discount = 0.15 * totalPrice;
cout << discount << endl;
purchaseAmount--;
}
while(0 < purchaseAmount);

return 0;
}

Answer 3

Maybe you don't understand how your code works ? Which seems quite impossible ,anyhow it works fine for me

Enter the negative number to stop loop

Answer 4

- Purchase amount is set to 0
So ( price > 0) is a infinite loop even with the discount hitting infinite times it will never touch zero
- you can set up a for loop and an dynamic array if the list size is unknown like for the prices. Solo learn has an awesone quick tutorial.

Answer 5

Giovanni many thanks, but the list size is known, it's three.

Answer 6

//this is the simplest way to get correct answer
#include <iostream>
using namespace std;

int main()
{
int purchaseAmount = 0;
int totalPrice;

//your code goes here
do{
cin>>totalPrice;
cout<<totalPrice * .15<<endl;
purchaseAmount++;

}
while( purchaseAmount <3);

return 0;
}

Answer 7

/* Here is a perfect example of the do...while loop.

I changed the data type of totalPrice to float as the discounted price includes decimals. Alternatively, you can create a new float data type and change the following section from

totalPrice = totalPrice * 0.15;

To

discount = totalPrice * 0.15;

Multiplying a decimal by a number finds the percentage, in this case 15%. You can also increase a number by a percentage with the same method. E.g totalPrice * 1.15 = 15% increase. A little bit of maths for you :) */

#include <iostream>
using namespace std;

int main()
{
int purchaseAmount = 0;
float totalPrice;

//your code goes here
do {
cin >> totalPrice;
purchaseAmount++;

totalPrice = totalPrice * 0.15;
cout << totalPrice << endl;
} while (purchaseAmount < 3);

return 0;
}

Answer 8

what are you using the loop for?

Answer 9

Abhay , Bahha🐧 it's a codecoach problem I have to solve, in sololearn's solution, their loop stopped at the third output.

Answer 10

Abhay I have updated the question now, kindly check.

Answer 11

Giovanni Do you have any idea of why it isn't showing decimals? For example, if a user inputs 6930, the output is supposed to be 1039.5 but it only shows 1039.