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C++ algorithm replace() function

❮ Algorithm Functions

Example

Replace "Ford" with "Toyota" in a vector:

vector<string> cars = {"Volvo", "BMW", "Ford", "Mazda"};
replace(cars.begin(), cars.end(), (string)"Ford", (string)"Toyota");
for (string car : cars) {
  cout << car << "\n";
}
Try it Yourself »

Definition and Usage

The replace() function replaces all occurrences of a value in a data range with a different value.

The range of data is specified by iterators.

Tip: To avoid modifying the data range and create a new data range instead, you can use the replace_copy() function.

Syntax

replace(iterator start, iterator end, <type> find, <type> replace);

<type> refers to the type of the data that the range contains.

Parameter Values

Parameter Description
start Required. An iterator pointing to the start of the data range being searched.
end Required. An iterator pointing to the end of the data range being searched. Elements up to this position will be searched, but the element at this position will not be included.
find Required. The value to search for.
replace Required. The replacement value.

Related Pages

Read more about data structures in our Data Structures Tutorial.

Read more about iterators in our Iterators Tutorial.

Read more about algorithms in our Algorithms Tutorial.

❮ Algorithm Functions