C++ Program to Find the Area of a Circle

This C++ Program which computes area of circle. The program takes radius of the circle as an input, calculates the area of the circle and outputs it on the screen.

Here is source code of the C++ program which computes area of circle. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

  1. /*
  2.  * C++ Program to Compute the Area of Circle
  3.  */
  4. #include <iostream>
  5.  
  6. int main()
  7. {
  8.     float radius, area;
  9.  
  10.     std::cout << "Enter the radius of circle : ";
  11.     std::cin >> radius;
  12.     area = 3.14 * radius * radius;
  13.     std::cout << "Area of circle with radius "
  14.               << radius << " is " << area;
  15. }

$ g++ main.cpp
$ ./a.out
Enter the radius of circle : 5
Area of circle with radius 5 is 78.5

Sanfoundry Global Education & Learning Series – 1000 C++ Programs.

advertisement
advertisement
If you wish to look at all C++ Programming examples, go to C++ Programs.

If you find any mistake above, kindly email to [email protected]

advertisement
advertisement
Subscribe to our Newsletters (Subject-wise). Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!

Youtube | Telegram | LinkedIn | Instagram | Facebook | Twitter | Pinterest
Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & discussions at Telegram SanfoundryClasses.