Magento Remove Decimals from product price

For this, you need to edit /app/code/core/Mage/Directory/Model/Currency.php

Note:- Do not change core functionality beside override the function in local folder

Find the following :- code

public function format($price, $options=array(), $includeContainer = true, $addBrackets = false)
    {
return $this->formatPrecision($price, 2, $options, $includeContainer, $addBrackets);
    }

change this code to:-

public function format($price, $options=array(), $includeContainer = true, $addBrackets = false)
    {
return $this->formatPrecision($price, 0, $options, $includeContainer, $addBrackets);
    }