Write a function to compute the square-root of a given number. If the given number is negative, your function should give an error message.

Write a function to compute the square-root of a given number. If the given number is negative, your function should give an error message.

#include <iostream>
#include <cmath>

using namespace std;
//  adding namespace
double square_root(double n) {
    if (n < 0) {
        cerr << "Error: Sorry, cannot compute square root of a negative Number" << endl;
        return -1; 
		// it will return with an error code
    } else {
        return sqrt(n);
    }
}

int main() {
//  starting main function
    double Number;
    cout << "Please Enter a Number to Calculate the square root of the given number ";
    cin >> Number;
    double Display = square_root(Number);
    if (Display >= 0) {
        cout << "The square root of " << Number << " is " << Display << endl;
    }
    return 0;
}

Output for Positive number

Please Enter a Number to Calculate the square root of the given number 4
The square root of 4 is 2

Output for Negative number

Please Enter a Number to Calculate the square root of the given number -6
Error: Sorry, cannot compute square root of a negative Number