Question

How to declare initialize and print vector of pairs in C++

Answer 1

#include <algorithm>
#include <iostream>
#include <vector>
 
void print(const std::vector<std::pair<int, int>> vec) {
    for (const auto& val : vec) {
        std::cout << val.first << ", " << val.second << std::endl;
    }
}
 
int main()
{
    std::vector<std::pair<int, int>> vec = { {4, 8}, {6, 1}, {-2, 900}, {23, 3} };

    print(vec);
}
 
   
   
/*
run:
   
4, 8
6, 1
-2, 900
23, 3
   
*/

 

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