Day 0

Hello, World!, Data Types

Hello, World!

Day 0: Hello, World! | HackerRankHackerRank

/**
*   A line of code that prints "Hello, World!" on a new line is provided in the editor. 
*   Write a second line of code that prints the contents of 'parameterVariable' on a new line.
*
*    Parameter:
*    parameterVariable - A string of text.
**/
function greeting(parameterVariable) {
    // This line prints 'Hello, World!' to the console:
    console.log('Hello, World!');

    // Write a line of code that prints parameterVariable to stdout using console.log:
    console.log(parameterVariable);
}

Data Types

Day 0: Data Types | HackerRankHackerRank

/**
*   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(firstInteger + Number(secondInteger));
    
    // 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(firstDecimal + Number(secondDecimal));
    
    // 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);
}