Last Updated : 17 Mar 2025

This function is used to find the string for the last occurrence of the sequence specified by its arguments.

Syntax

Consider a string 'str' and key string 's'. Syntax would be:

Parameter

str : str is a string object which is used in searching.

pos : It defines the position of the last character at which to start searching.

n : Number of characters to be considered in searching

ch : Character value to be searched for.

Example 1

Let's see this simple example.

Output:

Example 2

Let's see an another simple example by passing character value.

Output:

Example 3

Let's see this example when position pos is mentioned in a parameter.

Output:

Example 4

Let's see this example when number of characters to match is specified by its arguments.

Output: