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

0 vote125 views1 answer
C++ awitch statements
C++
0 vote108 views1 answer
Cpp get keystroke in console only
C++
0 vote107 views1 answer
C++ how to check whether a file exists?
C++
1 vote116 views1 answer
Cuda dim3
C++
2 votes116 views1 answer
Dangling Pointer
C++
0 vote106 views1 answer
Fractional Knapsack problem
C++
15 votes111 views3 answers
String to char array c++
C++
0 vote122 views1 answer
ALO
C++
-1 vote169 views1 answer
How to define range of numbers inside a if condition in c++
C++
0 vote120 views1 answer
How to scan vector in c++
C++