CMPSC-121辅导C/C++算法、辅导c++程序、辅导讲解C语言程序、辅导 C++

CMPSC-121: Intro to Programming Techniques

Project 1 (100 points) - Fall 2018

Due Sunday, September 23 at 11:59pm

Objectives

After this project, students should be able to apply various programming techniques including variables,

arithmetic, and output formatting to a single program.

Background

In November 2001, the National Weather Service implemented the new wind chill index, used by the U.S. and

Canadian weather services, which is determined by iterating a model of skin temperature under various wind

speeds and temperatures. The model used standard engineering correlations of wind speed and heat transfer rate.

Heat transfer was calculated for a bare face in wind, facing the wind, while walking into it at 1.4 meters per

second (3.1 mph). The model corrects the officially measured wind speed to the wind speed at face height,

assuming the person is in an open field. The results of this model may be approximated, to within one degree,

from the equivalent formula in U.S. customary units:

where and are measured in , and in mph (miles per hour)

represents actual temperature and represents wind speed, so, for example, if the actual temperature is 22℉

and the wind speed is 15 mph, the wind chill would be 8.8.

Instructions

Write a program named windchill.cpp which varies wind speed from 5 to 45 with an interval of 5 and

temperature from -5 to 50 with an interval of 5, and displays a table of windchill values in a well-formatted

table using loops.

Optional Bonus (+10 points)

For both wind speed and temperature, ask the user to enter the starting and ending values and the interval value.

Then produce the table based on those values.

Twc = 35.74 + 0.6215Ta − 35.75V0.16 + 0.4275TaV0.16

Twc Ta ℉ V

Ta V

Sample Output

Bonus Sample Output

Submission

Submit the following file(s) to Canvas before the deadline:

1. windchill.cpp

Temp | -------------- Wind Speed --------------

5 10 15 20 25 30 35 40 45

-5 -16.4 -22.1 -25.8 -28.6 -30.8 -32.7 -34.3 -35.7 -37.0

0 -10.5 -15.9 -19.4 -22.0 -24.1 -25.9 -27.4 -28.8 -30.0

5 -4.6 -9.7 -13.0 -15.4 -17.4 -19.1 -20.5 -21.8 -23.0

10 1.2 -3.5 -6.6 -8.9 -10.7 -12.3 -13.6 -14.8 -15.9

15 7.1 2.7 -0.2 -2.3 -4.0 -5.5 -6.8 -7.9 -8.9

20 13.0 8.9 6.2 4.2 2.6 1.3 0.1 -0.9 -1.8

25 18.9 15.1 12.6 10.8 9.3 8.1 7.0 6.1 5.2

30 24.7 21.2 19.0 17.4 16.0 14.9 13.9 13.0 12.2

35 30.6 27.4 25.4 23.9 22.7 21.7 20.8 20.0 19.3

40 36.5 33.6 31.8 30.5 29.4 28.5 27.7 26.9 26.3

45 42.3 39.8 38.2 37.0 36.1 35.3 34.5 33.9 33.3

50 48.2 46.0 44.6 43.6 42.8 42.0 41.4 40.9 40.4

Please enter the starting temperature, ending temperature, and

temperature interval: -30 90 20

Please enter the starting wind speed, ending wind speed, and wind speed

interval: 0 5 1

Temp | -------------- Wind Speed --------------

0 1 2 3 4 5

-30 17.1 -31.5 -37.2 -40.8 -43.5 -45.7

-10 29.5 -10.5 -15.2 -18.2 -20.4 -22.3

10 42.0 10.5 6.8 4.4 2.7 1.2

30 54.4 31.5 28.8 27.1 25.8 24.7

50 66.8 52.4 50.8 49.7 48.9 48.2

70 79.2 73.4 72.7 72.3 72.0 71.7

90 91.7 94.4 94.7 94.9 95.1 95.2