Question

The higher the wind speed, the quicker a body cools. To quantify this wind speed chilling effect, both the U.S. and Canadian weather services have determined wind chill temperatures for temperatures below 50°F and wind speeds above 4 mph in the United States and temperatures below 10°C and wind speeds above 4.8 km/hr in Canada. An approximation of the official wind chill temperature, for both metric and English units, is given by this formula:

WCI = K1 + 0.6125 Ta - K2Ws0.16 + K3TaWs0.16
The following chart lists the correct dimensions and values for both systems of units:

Symbol	Meaning	Metric Units (Canada)	U.S. Customary Units
WCI	Wind chill index	°C	°F
Ta	Measured temperature	°C	°F
Ws	Wind speed	km/hr	mi/hr
K1	Conversion factor	13.12	35.74
K2	Conversion factor	11.37	35.75
K3	Conversion factor	0.3965	0.4275

Using the wind chill formula, write, compile, and run a C++ program that displays a table of wind chill indexes for temperatures from 2°C to 10°C, in 4-degree increments, and for each temperature, wind speeds from 5 km/hr to 11 km/hr in 2-km/hr increments.

Answer 1

#include <iostream>

#include <iomanip>

using namespace std;

int main()

{

char c;

cout << "Enter your choice that you want to see table in C or F: ";

cin >> c;

switch (c)

{

case 'C':

{

float ws, K1 = 13.12, K2 = 11.37, K3 = .3965, wci;

cout << "Enter wind speed in km/hr: ";

cin >> ws;

int ta;

cout << setw(10) << "Ta" << setw(10) << "Ws" << setw(10) << "WCI" << endl;

cout << "----------------------------------------" << endl;

for (ta = -10; ta <= 10; ta += 5)

{

wci = K1 + (0.6215 * ta) + K2 * ws * 0.016 + K3 * ta * ws * 0.16;

cout << setw(10) <<ta << setw(10) << ws << setw(10) << wci<<endl;

}

}

break;

case 'F':

{

float ws, K1 = 35.74, K2 = 35.75, K3 = .4275, wci;

cout << "Enter wind speed in km/hr: ";

cin >> ws;

int ta;

cout << setw(10) << "Ta" << setw(10) << "Ws" << setw(10) << "WCI" << endl;

cout << "----------------------------------------" << endl;

for (ta = -30; ta <= 20; ta += 10)

{

wci = K1 + (0.6215 * ta) + K2 * ws * 0.016 + K3 * ta * ws * 0.16;

cout << setw(10) <<ta << setw(10) << ws << setw(10) << wci<<endl;

}

}

break;

default:

cout << "Invalid Option."<<endl;

return 0;

}

}