PI IN C++ WITH CMATH

#include <iostream>
#include <cmath>
using namespace std;
float area(int radius) {
   return M_PI * (radius * radius);
}
int main () {
   cout << "Area of a circle with radius 7 unit is: " << area(7);
}

Source: tutorialspoint.com

Similar codes

-1 vote314 views10 answers
Time complexity calculator online
C++
0 vote313 views1 answer
Xor in c++
C++
0 vote319 views1 answer
Remove a element from an array c++
C++
0 vote349 views1 answer
Const in c++ is same as globle in python
C++
1 vote349 views3 answers
Print 2d vector c++
C++
0 vote306 views1 answer
Platform io change baud rate
C++
5 votes349 views6 answers
Binary search algorithm
C++
6 votes318 views2 answers
How to print a decimal number upto 6 places of decimal in c++
C++
0 vote306 views2 answers
How to compile with libstdc++ fedora
C++
0 vote327 views1 answer
C++ typedef template class
C++