var firstInteger = 4;

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

// Declare a variable named 'firstString' and initialize with the string "HackerRank".
var 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.
firstInteger+=parseInt(secondInteger);
firstDecimal+=parseFloat(secondDecimal);
firstString+=secondString;
console.log(firstInteger)
console.log(firstDecimal)
console.log(firstString)