C++ Algorithm replace_copy()
C++ Algorithm replace_copy() function is used to make a copy of the range [first, last) and replaces all old_value by the value new_value into it. It uses operator= to make the copy and to compare the elements it uses operator==.
This function examines each element in a source range and replaces it if it matches a specified value while copying the result into a new destination range.
Syntax
Parameter
first: An input iterator pointing to the initial position in the range from which elements are being replaced.
last: A input iterator pointing to the final position in the range from which elements are being replaced.
result: An output iterator pointing to the first element of the range where the resulting sequence is stored.
old_value: The old value of the element being replaced.
new_value: The new value assigned to the elements with the old value.
Return value
replace_copy() function returns an output iterator pointing to the position that points to the last element written in the result sequence.