Question

In C++

============================================================EXERCISE 2 PROBLEM SET============================================================

1) Declare a structure named TempScale , with the following members:fahrenheit: a doublecentigrade: a doubleNext, declare a structure named Reading , with the following members:windSpeed: an inthumidity: a doubletemperature: a TempScale str ucture variableNext define a Reading structure variable.

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2) Write statements that will store the following data inthe variable you defined in Problem 1:Wind Speed: 37 mphHumidity: 32%Fahrenheit temperature: 32 degreesCentigrade temperature: 0 degrees

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3) Write a function called showReading. It should accept a Reading structure variable (Prob #1) as its argument.The function should display the contents of thevariable on the screen.------------------------------------------------------------

4) Write a function called findReading. It should use aReading structure reference variable (Prob # 1) as itsparameter. The function should ask the user to entervalues for each member of the structure.

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5) Write a function called getReading , which returns aReading structure (Prob #1). The function should askthe user to enter values for each member of a Readingstructure, then return the structure.

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6) Write a function called recordReading . It should use aReading structure pointervariable (Prob #1) as itsparameter. The function should ask the user to entervalues for each member of the structure pointed toby the parameter.

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7) Rewrite the following statement using the structurepointer operator:(*rptr).windSpeed = 50;

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8) Rewrite the following statement using the structurepointer(arrow)operator: *(*strPtr).num = 10;

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Answer 1

Code 1 to 6;

#include<iostream>
using namespace std;
void showReading(struct Reading);
void findReading(struct Reading &);
void recordReading (struct Reading *);
struct Reading getReading ();
struct TempScale
{
   double fahrenheit;
   double centigrade;
};
struct Reading
{
   int windSpeed;
   double inthumidity;
   TempScale temperature;
};
int main()
{
   Reading readData;
   readData.inthumidity=32;
   readData.windSpeed=37;
   readData.temperature.fahrenheit=32;
   readData.temperature.centigrade=0;
   showReading(readData);

   cout<<"\n\nfindReading function call"<<endl;
   findReading(readData);
   showReading(readData);

   cout<<"\n\ngetReading function call"<<endl;
   readData=getReading();
   showReading(readData);

   cout<<"\n\nrecordReading function call"<<endl;

   recordReading(&readData);
   showReading(readData);
   return 1;
}
void showReading(struct Reading reading)
{
   cout<<"Wind speed: "<<reading.windSpeed<<" mph"<<endl;
   cout<<"Humidity: "<<reading.inthumidity<<"%"<<endl;
   cout<<"Fahrenheit temperature: "<<reading.temperature.fahrenheit<<" degree"<<endl;;
   cout<<"Centigrade temperature: "<<reading.temperature.centigrade<<" degree"<<endl;
}
void findReading(struct Reading & reading)
{
   cout<<"Enter the wind speed: ";
   cin>>reading.windSpeed;
   cout<<"Enter the humidity in percentage: ";
   cin>>reading.inthumidity;
   cout<<"Entre fahrenheit remperature: ";
   cin>>reading.temperature.fahrenheit;
   cout<<"Entre Centigrade remperature: ";
   cin>>reading.temperature.centigrade;
}
struct Reading getReading ()
{
   Reading reading;
   cout<<"Enter the wind speed: ";
   cin>>reading.windSpeed;
   cout<<"Enter the humidity in percentage: ";
   cin>>reading.inthumidity;
   cout<<"Entre fahrenheit remperature: ";
   cin>>reading.temperature.fahrenheit;
   cout<<"Entre Centigrade remperature: ";
   cin>>reading.temperature.centigrade;
   return reading;
}
void recordReading (struct Reading *ptr)
{
   cout<<"Enter the wind speed: ";
   cin>>ptr->windSpeed;
   cout<<"Enter the humidity in percentage: ";
   cin>>ptr->inthumidity;
   cout<<"Entre fahrenheit remperature: ";
   cin>>ptr->temperature.fahrenheit;
   cout<<"Entre Centigrade remperature: ";
   cin>>ptr->temperature.centigrade;
}

ouput

7)

(*rptr).windSpeed=50 is same as rptr->windSpeed=50;

8)

ans

*strPtr->num = 10;

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