Data Types in C++

Muhammad Magdi

Data Types

Data Type	Description
int	Small integer number
double	Large real number
long long	Large integer number
string	A sequence of characters (word)
char	A single character
bool	Boolean number (0 or 1)

URI 1008 - Salary

[Problem Summary]

Given:
- integer number representing employee's number.
- integer number representing the number of hours he worked.
- real number representing the amount of money he takes per hour.
Print a report containing his number and the total money he should take rounded to exactly 2 decimal places.

URI 1008 - Salary

[Solution]

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
  int id, hours;
  double rate;
  cin >> id >> hours >> rate;
  cout << fixed << setprecision(2);
  cout << "NUMBER = " << id << endl;
  cout << "SALARY = U$ " << hours * rate << endl;  
  return 0;
}

URI 1008 - Salary

[Notes]

In order to tell "cout" that we need only 2 places after the decimal point, we used "setprecision(2)".
"setprecision()" is in the "iomanip" library so we had to #include it.
the line:
"cout << fixed << setprecision(2);" doesn't print anything, it only tells "cout" how it should work with real numbers.

URI 1002 - Area of a Circle

[Problem Summary]

Given:
- A real number representing
  the radius of a circle.
Print:
- The message "A=" followed by
  the area of that circle with 4 places
  after the decimal point.

Area = π*Radius^2

URI 1002 - Area of a Circle

[Solution]

#include <iostream>
#include <iomanip>

using namespace std;


int main() {
  double PI = 3.14159;
  double radius;
  cin >> radius;
  cout << fixed << setprecision(4);
  cout << "A=" << PI * radius * radius << endl;
  return 0;
}

Assignment

Thanks

Content

Data Types
URI 1008 - Salary
setprecision
URI 1002 - Area of a Circle
Assignment