//in c++

/*
    cout<<4+integer_num<<'\n';
    cout<<fixed<<setprecision(1)<<4.0+double_num<<'\n';
    cout<<"HackerRank "+String<<'\n';
*/

//in c

include

include

include

include

int main() { int i = 4; double d = 4.0; char s[] = "HackerRank "; int j; double k; char s1[100]; scanf("%d",&j); scanf("%lf",&k); getchar(); fgets(s1,sizeof(s1),stdin); printf("%d\n",i+j); printf("%.1lf\n",k+d); printf("%s%s\n",s,s1);

return 0;

}

1. import java.io.*;
2. import java.util.*;
3. import java.text.*;
4. import java.math.*;
5. import java.util.regex.*;
6. 7. public class Solution {
7. 9. public static void main(String[] args) {
8. int i = 4;
9. double d = 4.0;
10. String s = "HackerRank ";
11. 14. Scanner scan = new Scanner(System.in);
12. int a= scan.nextInt();
13. System.out.println(a+i);
14. double b=scan.nextDouble();
15. System.out.println(b+d); 19 scan.nextLine(); // For clear buffer
16. String c=scan.nextLine();
17. System.out.println(s+c);
19. 25. scan.close(); } }

/* Declare second integer, double, and String variables. / int i2; double d2; String s2; / Read and save an integer, double, and String to your variables./ i2 = scan.nextInt(); d2 = scan.nextDouble(); scan.nextLine(); s2 = scan.nextLine(); / Print the sum of both integer variables on a new line. / System.out.println(i + i2); / Print the sum of the double variables on a new line. / System.out.println(d + d2); / Concatenate and print the String variables on a new line; the 's' variable above should be printed first. */ System.out.println(s.concat(s2));

Javascript solution for those whoo need help

{ // Predefined variables

var i = 4;  // Integer
var d = 4.0;  // Double
var s = "HackerRank ";  // String

// Read input values

let num = parseInt(readLine());  // Read integer from input
let myDouble = parseFloat(readLine());  // Read double from input
let myString = readLine();  // Read string from input

// Print the sum of both integer variables
let sum = num + i;
console.log(sum);

// Print the sum of both double variables, rounded to 1 decimal place

let sum1 = myDouble + d;
console.log(sum1.toFixed(1));  // Print with one decimal place

// Concatenate and print the String variables

let newString = s + myString;
console.log(newString);

}