int main(){
for (auto k : { -100, -10, -1, 0, 1, 10, 100 }){
double n = MPI * pow(10.0, k);
std::cout << n << "\n" << sqrt(n) << "\n" << my_sqrt_1(n) << "\n";
}
return 0;
}
int main()
{
//Error Check
//Runs program until it's finished or error is found
//Goes through catch to find source of error
//If error is found tells user of error before quitting
try {
//Initializing variables
double n = 0;
double relative_error_per_cent = 0;
//Repeat
//For a list of values, the function is computed
for(auto k : {-100, -10, -1, 0, 1, 10, 100})
{
//Computes function for finding
n = M_PI * pow(10.0, k);
relative_error_per_cent = 100 * ( (my_sqrt_1(n) - sqrt(n)) / sqrt(n) );
//Outputs
//Prints values of n, square root of n and the function square root of n
cout << "The value of n is " << n << endl
<< "The value of the square root n is " << sqrt(n) << endl
<< "The value of my square root is " << my_sqrt_1(n);
cout << setw(40) << "The relative error is " << relative_error_per_cent << endl;
}
}
catch (exception& e)
{
cerr << "error: " << e.what() << endl;
return 1;
}
catch(...)
{
cerr << "Oops: unknown exception!" << endl;
return 2;
}
return 0;
}
double my_sqrt_2( double n ) // To calculate square root of n by the given formula
{
double result = 1.00;
while( n > 8/5 )
{
result *= 2 ;
n = n / 4 ;
}
while( n < 2/5 )
{
result /= 2;
n = n * 4;
}
return result * my_sqrt_1( n ); //calls the function my_sqrt_1(n) which returns a value, which is multiplied with the result and returned where the function is called
}
