import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {
    int i=4;
    double d=4.0;
    String s="HackerRank";
    Scanner sc = new Scanner(System.in);
    int i2=sc.nextInt();
    double d2=sc.nextDouble();
    sc.nextLine();
    String s2=sc.nextLine();
    System.out.println(i+i2);
    System.out.println(d+d2);
    System.out.println(s+" "+s2);
    sc.close();
}

}

Here is my solution in Java:

public class Solution {

public static void main(String[] args) {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */

    // declaire first vars
    int i = 4;
    double d = 4.0;
    String s = "HackerRank ";
    Scanner scan = new Scanner(System.in);

    //declaire second vars
    int a = 12;
    double b = 4.0;
    String c = "is the best place to learn and practice coding!";

    // read and save vars
    a = scan.nextInt();
    b = scan.nextDouble();
    scan.nextLine();
    c = scan.nextLine();

    // print sum
    System.out.println(i+a);
    System.out.println(d+b);
    s = s+c;
    System.out.print(s);
    scan.close();    
}

}

Java : int num; double point; String words;

num = scan.nextInt();
point = scan.nextDouble();
scan.nextLine();
words = scan.nextLine();

s = s+words;
System.out.println(num+i);
System.out.println(point+d);
System.out.print(s);

why can't i use cin and getline() together in c++?

i = 4 d = 4.0 s = 'HackerRank '

Declare second integer, double, and String variables.

i = 4 d = 4.0 s = 'HackerRank '

Read and save an integer, double, and String to your variables.

i2 = input() d2 = input() s2 = input()

Print the sum of both integer variables on a new line.

print(i + int(i2))

Print the sum of the double variables on a new line.

print(d + float(d2))

Concatenate and print the String variables on a new line

The 's' variable above should be printed first.

print (s + str(s2))