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 file 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);
}