Suppose we have a JDBC Connection object c to a database, and this database has a relation

R(name, address, phone)

Columns name and address are of string type, while phone is an integer.
The following objects are also declared:

Statement s = null;
String q = "SELECT address, phone FROM R" + "WHERE name = 'Bill Gates'".
ResultSet r null;

There are many methods that could be applied to the given variables. When a method is applied to r, assume that it holds the result of query q. Then, identify a correct use of a method from the list below.

a) String x = r. getInt (1);
b) r = c. executeQuery (g) ;
c) int p = r. getInt (2);
d) r = s. executeQuery ( );

more information

explanation:

answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

//main function

int main()

{

  // variable

 int n;

 cout<<"enter a number:";

 // read the input

 cin>>n;

 // find the square root of the absolute value

 float square_root=sqrt(abs(n));

 // print the square_root

 cout<<"square root of "<<n<<" is: "<<square_root<<endl;

  return 0;

}

Explanation:

Read a number from user and assign it to "n".Then find its absolute value with abs() function.Then calculate the square root of the absolute value with sqrt() function.Print the square root of the number.

Output:

enter a number:-17

square root of -17 is: 4.12311

                                                         This is easy

                                                     sinserly Natalie 7 grader (this is not that hard)