8.) (35) write one complete c++ program to calculate the circumference (c 2PIr)

Question

8.) (35) write one complete c++ program to calculate the circumference (c 2PIr) of a circle and the area PIr2) of a circle. The radius should be entered from a input file and should set up as a in the program. The area, and circumference will be stored on an output file with headings. You do not have to include the 2 columns of information at the top of the program or the program description. However, do include any preprocessor commands (like include, etc). This program should include at least 4 functions: read FileData, PrintFileData, calcArea and calcCircumference. Use your own end of file processing a trailer of -1, a count in front of the data on the file, or a test for fin.eof().

Explanation / Answer

#include<iostream>

using namespace std;

int main()

{

float PI=3.14;

float radius,area,circum;

cout<<"Enter radius of circle: ";

cin>>radius;

area=PI*radius*radius;

circum=2*PI*radius;

cout<<"Area of circle: "<<area<<endl;

cout<<"Circumference of circle: "<<circum;

return 0;

}

***********************************************************************************************

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