Tasks: arithmetic operations in C ++

156 thoughts on “Tasks: arithmetic operations in C ++”

1. #include
using namespace std;

   int main()
{
float deposit = 0;
float numberOfMonth = 0;
float profitOnMonth = 0;
float profitForTime = 0;
float fullAmount = 0;
float interestRate = 5;
cout << deposit;
cout << numberOfMonth;

   profitOnMonth = deposit*(interestRate/100)/(365*30);
profitForTime = profitOnMonth * numberOfMonth;
fullAmount = deposit + profitForTime;

   cout << "Profit on month: " << profitOnMonth << endl;
cout << "Profit for time: " << profitForTime << endl;
cout << "Full amount: " << fullAmount;

   return 0;
}
   Here is my code. I checked everything a thousand times. For the life of me, I don’t understand why the output is different from yours!!!! Recalculated on a calculator – the same!!! What did you do to receive such a response?????

   Reply

   1. All your variables except interestRate are equal 0. And I don't see, so that you can enter them from the keyboard :)
      Or initialize them, or organize assignment during program execution.

      Reply

   2. Spice it up

      
#include
using namespace std;

      int main()
{
float deposit = 1000;
float numberOfMonth = 12;
float profitOnMonth = 0;
float profitForTime = 0;
float fullAmount = 0;
float interestRate = 5.0;

      profitOnMonth = deposit*(interestRate / 100) / 365 * 30;
profitForTime = profitOnMonth * numberOfMonth;
fullAmount = deposit + profitForTime;

      cout << "Profit on month: " << profitOnMonth << endl;
cout << "Profit for time: " << profitForTime << endl;
cout << "Full amount: " << fullAmount;
system("pause");
return 0;
}


      Reply

2. P.S.
   cout deposit;
   cout numberOfMonth;
   It's not there. There's an error in the comment..
   Please explain why you get this answer.!

   Reply

   1. that's where
      cout < < deposit; cout << numberOfMonth;
      do it
      cin >> deposit;
cin >> numberOfMonth;
      and everything will work out

      Reply

3. It seems like a trifle, but it’s nice when there are results from a new interest)))
   Of my mistakes in this exercise, I’ll note:
   1) Inconvenient design (compared to the author);
   2) Didn't enter variables “number of days in a year” and “number of days in a month”, I just put them in the formula;
   3) Didn't assign values ​​to variables 0 at the very beginning – the program worked only when the calculation was a line above the output command on the screen

   Reply

   1. Everyone makes enough mistakes while studying. In programming it’s even more so ) And not only during school.
      You can't get by with just one theory. – we need to solve more and analyze other people’s codes. Mine are far from ideal ;)

      Reply

4. Hi) For the first assignment I made this code:) Different from yours) I just can't understand how it works (my code) :D
   Prompt, you are welcome!)
   #include
using namespace std;
int main()
{
setlocale(LC_ALL, "rus");
int four_digit_number;
cout << four_digit_number;
cout << "Число в обратном порядке: ";
cout << four_digit_number % 10;
cout << (four_digit_number / 10) % 10;
cout << ((four_digit_number / 10) / 10) % 10;
cout << (((four_digit_number / 10) / 10) / 10) % 10;
getchar(); getchar();
return 0;
}

   Reply

   1. pancake, not copied properly

      Reply

5. Here is my code:

   #include
using namespace std;

   int main()
{ double summa;
double meciac;
setlocale( LC_ALL,"Russian" );

   cout << "Введите сумму депозита" << summa;
cout << "Прибыль с депозита в месяц" << summa*5/100/365*30 << endl;
cout << "Введите количество месяцев" << meciac;
cout << "Прибыль за весь срок депозита" << summa*5/100/365*meciac*30<< endl;
cout << "Общая сумма к выплате за весь период" << summa + summa*5/100/365*meciac*30<< endl;
system ("pause");
return 0;
}

   Reply

6. I have,along the way,the coolest code :DDDD

   setlocale(LC_ALL, "rus");

   double dol = 0;
double month = 0;
double prInMonth = 0;
double alldep = 0;
double allPr = 0;
double interest = 5;
int daysInMonth = 30;
int daysInYear = 364;

   cout << "\t \t \\ Банк Егора,б***. \\ ";

   cout << endl << endl;

   cout <> dol;
cout <> month;

   cout << endl << endl;

   cout << "\t \t Please,wait.We working :) \n";
cout << "\t \t \\ ===================== \\ \n";

   cout << endl << endl;

   prInMonth = dol * (interest / 100) / daysInYear * daysInMonth;
cout << "Your profit in month : " << prInMonth << endl;

   alldep = prInMonth * month;
cout << "Your deposit for all your time : " << alldep << endl;

   allPr = dol + alldep;
cout << "Your money for yout time : " << allPr << " usd " << endl;

   cout << endl << endl;

   _getch();
return 0;

   Reply

7. Soryan,but there is a little gram there. errors :D

   Reply

8. My answer has zeros everywhere. Can you please tell me what is the error??

   int main()
{
setlocale(LC_ALL, "Russian");

   float sumDeposit = 0;
int amountOfMounth = 0;
int interestRate = 5;

   float profitForMounth = 0;
float profitForYear = 0;
float profitForAllRate = 0;

   int mounth = 30;
int year = 365;

   cout <> sumDeposit;
cout <> amountOfMounth;
cout << endl;

   cout << "=============================" << endl;
cout << "Происходит вычисление ...";
cout << endl << endl;

   profitForMounth = sumDeposit*(interestRate/100)/(year*mounth);
profitForYear = profitForMounth*amountOfMounth;
profitForAllRate = profitForYear+sumDeposit;

   cout << "Прибыль с депозита за месяц: " << profitForMounth << endl;
cout << "Прибыль с депозита за все время срока: " << profitForYear << endl;
cout << "Общая сумма выплаты в конце срока депозита: " << profitForAllRate;

   _getch();
return 0;
}

   Reply

   1. define not int interestRate = 5;
      а float interestRate = 5;
      the whole mistake is in this.
      When does the calculation start? (interestRate/100) – this is what happens: 5 divided by 100. it should work 0.05, but so how type defined int – the fractional part is discarded and remains 0.

      Reply

      1. I have a stupid mistake, but still thank you very much for your help)