# Day 0: Data Types | 10 Days of JavaScript | HackerRank Solution

Hello coders, today we are going to solve Day 0: Data Types HackerRank Solution which is a part of 10 Days of JavaScript Series.

## Objective

Today, we’re discussing data types. Check out the attached tutorial for more details.

Variables named firstInteger, firstDecimal, and firstString are declared for you in the editor below. You must use the  operator to perform the following sequence of operations:

1. Convert secondInteger to an integer (Number type), then sum it with firstInteger and print the result on a new line using `console.log`.
2. Convert secondDecimal to a floating-point number (Number type), then sum it with firstDecimal and print the result on a new line using `console.log`.
3. Print the concatenation of firstString and secondString on a new line using `console.log`. Note that firstString must be printed first.

## Output Format

Print the following three lines of output:

1. On the first line, print the sum of firstInteger and the integer representation of secondInteger.
2. On the second line, print the sum of firstDecimal and the floating-point representation of secondDecimal.
3. On the third line, print firstString concatenated with secondString. You must print firstString before secondString.

Sample Input 0

``````12
4.32
is the best place to learn and practice coding!``````

Sample Output 0

``````16
8.32
HackerRank is the best place to learn and practice coding!``````

Explanation 0

When we sum the integers 4 and 12, we get the integer 16.
When we sum the floating-point numbers 4.0 and 4.32, we get 8.32. When we concatenate `HackerRank` with `is the best place to learn and practice coding!`, we get `HackerRank is the best place to learn and practice coding!`.

## Solution – Day 0: Data Types

```'use strict';

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', inputStdin => {
inputString += inputStdin;
});

process.stdin.on('end', _ => {
inputString = inputString.trim().split('\n').map(string => {
return string.trim();
});

main();
});

return inputString[currentLine++];
}

/**
*   The variables 'firstInteger', 'firstDecimal', and 'firstString' are declared for you -- do not modify them.
*   Print three lines:
*   1. The sum of 'firstInteger' and the Number representation of 'secondInteger'.
*   2. The sum of 'firstDecimal' and the Number representation of 'secondDecimal'.
*   3. The concatenation of 'firstString' and 'secondString' ('firstString' must be first).
*
*	Parameter(s):
*   secondInteger - The string representation of an integer.
*   secondDecimal - The string representation of a floating-point number.
*   secondString - A string consisting of one or more space-separated words.
**/
function performOperation(secondInteger, secondDecimal, secondString) {
// Declare a variable named 'firstInteger' and initialize with integer value 4.
const firstInteger = 4;

// Declare a variable named 'firstDecimal' and initialize with floating-point value 4.0.
const firstDecimal = 4.0;

// Declare a variable named 'firstString' and initialize with the string "HackerRank".
const firstString = 'HackerRank ';

// Write code that uses console.log to print the sum of the 'firstInteger' and 'secondInteger' (converted to a Number        type) on a new line.
console.log(parseInt(secondInteger) + parseInt(firstInteger));

// Write code that uses console.log to print the sum of 'firstDecimal' and 'secondDecimal' (converted to a Number            type) on a new line.
console.log(parseFloat(secondDecimal) + parseFloat(firstDecimal));

// Write code that uses console.log to print the concatenation of 'firstString' and 'secondString' on a new line. The        variable 'firstString' must be printed first.
console.log(firstString + secondString);
}```

Disclaimer: The above Problem (Day 0: Data Types) is generated by Hacker Rank but the Solution is provided by CodingBroz. This tutorial is only for Educational and Learning Purpose.