What is the purpose of `replace` in C++?

In C++, the replace function is used to replace elements in a container within a specified range. Specifically, the replace function takes three parameters: a starting iterator, an ending iterator, and the value to be replaced. Within the specified range, the replace function will replace all elements equal to the value to be replaced with the new value.

The replace function is often used to replace specific numbers or characters in a container, helping to simplify code and improve code readability.