Bjarne Stroustrup “Programming Principles and Practice Using C++”
Chapter 4 Exercise 2
Using std_lib_facilities.h by Bjarne Stroustrup.
[code language=”cpp”]
// Philipp Siedler
// Bjarne Stroustrup’s PP
// Chapter 4 Exercise 2
#include "std_lib_facilities.h"
int main() {
vector<double> temps;
double temp;
cout << "Enter a double\n";
//pushing new temperature values into temps vector
while (cin >> temp)
{
temps.push_back(temp);
cout << "type another double or press n to continue and calculate the median temperature.\n";
}
//displaying vector size
cout << "size of vector: " << temps.size() << ‘\n’;
//sorting temps vector
sort(temps); //sort(temps.begin(), temps.end());
//calculate median
double median;
if (temps.size() % 2 == 0)
median = (temps[temps.size() / 2 – 1] + temps[temps.size() / 2]) / 2;
else
median = temps[temps.size() / 2];
cout << "Median temperature: " << median << endl;
keep_window_open("-");
}
[/code]
Output: Enter a double 2.3 type another double or press n to continue and calculate the median temperature. 2.6 type another double or press n to continue and calculate the median temperature. n size of vector: 2 Median temperature: 2.45 Please enter - to exit
