[introduction] approximate value

describe

Write a program , Accept a positive floating point number , Output the approximate integer value of this value . If the value after the decimal point is greater than or equal to 0.5 , Rounding up ; Less than 0.5 , Then round down .
Data range ： Make sure that the number entered is in 32 Bit floating point number range

Input description

Enter a positive floating point number

Output description

Output the approximate integer value of this value

Example 1

Input ：5.5
Output ：6
explain ：0.5>=0.5, therefore 5.5 Need to round up to 6

Example 2

Input ：2.499
Output ：2
explain ：0.499<0.5,2.499 Round down to 2

<?php
fscanf(STDIN, "%f", $a);
echo round($a,0);