How can I use sqrt function?

Question

//My code
#include <iostream>
#include <math>
using namespace std;
int main () {
float a;
a=sqrt(25);
cout<<a;
return 0;
}

Output :
math : no such file or directory

Answer 1

The name of header file is not 'math', it is 'cmath'. Change 'math' to 'cmath' in the 2nd lime
#include <cmath>

Answer 2

sqrt function in C++ returns the square root of the double integer inside the parameter list. The method accept a double integer value as input find square root and returns a double integer as output.

Answer 3

XXX
You are ✅