Write a function isqrt that computes the integer square root

Write a function isqrt that computes the integer square root of a nonnegative integer. Write a unit test that adequately exercises your function. The function prototype should be: int is art (int n, int * isr); Your function should return 0 if successful an - 1 otherwise. Lack of success means that n is negative or s is a NULL pointer. In all other cases, isqrt should write the result to the location pointed by isr.

Solution

Code:

Please include this library math.h for finding the square root

#include <math.h>