C++ #1 Design, create, and test a program which converts degrees Fahrenheit to d

Question

C++

#1 Design, create, and test a program which converts degrees Fahrenheit to degrees Centigrade (Celsius). The program must contain one main program and 3 functions: F2C() and C2F() and instructions(). The user will be asked to enter a numeric code to determine the operation. If the input code = 1, then convert F to C, if the code = 2, then convert C to F, if the input code = 3, then display instructions, and if the code = 4, then quit. The program should be in a "loop" that repeatedly performs conversions until the user quits, then the program stops. Display the instructions one time when the program starts (or whenever the user enters code = 3). Keep inputs and outputs (except for instructions) in the main program. Use F2C() and C2F() to perform conversion only.

Here is a sample output

Explanation / Answer

*

Design, create, and test a program which converts degrees Fahrenheit to degrees Centigrade (Celsius).

The program must contain one main program and 3 functions: F2C() and C2F() and instructions().

The user will be asked to enter a numeric code to determine the operation.

If the input code = 1, then convert F to C,

if the code = 2, then convert C to F,

if the input code = 3, then display instructions,

and if the code = 4, then quit.

The program should be in a "loop" that repeatedly performs conversions until the user quits,

then the program stops.

Display the instructions one time when the program starts (or whenever the user enters code = 3).

Keep inputs and outputs (except for instructions) in the main program.

Use F2C() and C2F() to perform conversion only.

*/

#include<iostream>

//#include<cstdlib>

using namespace std;

//prototype

double F2C(double );

double C2F(double );

void instructions();

int main(){

//set precision for decimal to 1

cout.setf(ios::fixed);

cout.setf(ios::showpoint);

cout.precision(1);

int code;

double F,C;

instructions();

while(true){

cout<<"Enter code > ";

cin>>code;

switch(code){

case 1:// FtoC

cout<<"Enter degrees in Fahrenheit > ";

cin>>F;

C=F2C(F);

cout<<C<<" degrees Centigrade ";

break;

case 2://CtoF

cout<<"Enter degrees in Centigrade > ";

cin>>C;

F=F2C(C);

cout<<F<<" degrees Fahrenheit ";

break;

case 3://display instructions

instructions();

break;

case 4://quit

// system("pause");

cout<<"Press any key to continue . . .";

cin.get();

return 0;

break;

default:

cout<<"Invalid input entered.";

}//end switch

}//end while

//system("pause");

cout<<"Press any key to continue . . .";

cin.get();

return 0;

}

double F2C(double F){

double C = (5.0/9.0)*(F-32);

return C;

}

double C2F(double C){

double F=(9.0/5.0)*C+ 32;

return F;

}

void instructions(){//displays instructions

cout<<"This program converts temperature readings from Centigrade to Fahrenheit. "

<<"Please enter the numeric code to determine the operation. "

<<"Code = 1 Convert Fahrenheit to Centigrade "

<<"Code = 2 Convert Centigrade to Fahrenheit "

<<"Code = 3 Display Instructions "

<<"Code = 4 Quit ";

return;

}

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