C++ Math sqrt()

This function finds the square root of a given number.

Consider a argument 'arg' :

Syntax

Syntax would be :

double sqrt(double arg);
float sqrt(float arg);
long double sqrt(long double arg);
double sqrt(integral arg);

Parameter

arg: It is the value of float or integer type.

Return value

It returns the square root of the argument arg.

Example 1

Let's see a simple example when argument 'arg' is of integer type.

#include <iostream>
#include<cmath>
using namespace std;
int main()
{ int arg=16;
 std::cout << "Square root of a number is :" <<sqrt(arg);
  return 0;
}

Output:

Square root of a number is :

Example 2

Let's see a simple example when argument 'arg' is of float type

#include <iostream>
#include<cmath>
using namespace std;
int main()
{float arg=8.5;
 std::cout << "Square root of a number is :" <<sqrt(arg);
 return 0;
}

Output: