how to initialize a vector of pairs in c++

To initialize a vector of pairs in C++, follow these steps:

  1. Include the necessary header file:
  2. This header file contains the necessary functions and definitions for working with vectors.

  3. Define the vector: std::vector> vectorName;

  4. Replace "Type1" and "Type2" with the desired data types for the first and second elements of the pair.
  5. Replace "vectorName" with the desired name for your vector.

  6. Initialize the vector with pairs:

  7. Use the curly brace initializer syntax to initialize the vector with pairs.
  8. Each pair is enclosed in parentheses and separated by commas.
  9. The first and second elements of each pair are separated by a comma.
  10. Example: vectorName = {{element1_1, element1_2}, {element2_1, element2_2}, ...};
  11. Replace "element1_1", "element1_2", etc. with the actual values you want to initialize the pairs with.

Here's an example that demonstrates the initialization of a vector of pairs of integers:

#include <vector>

int main() {
    std::vector<std::pair<int, int>> myVector;

    myVector = {{1, 2}, {3, 4}, {5, 6}};

    return 0;

This example initializes the "myVector" vector with three pairs of integers: (1, 2), (3, 4), and (5, 6).