How to Create a Vector of Tuples in C++?

In C++, a tuple is an object that allows the users to store elements of various data types together while a vector is used to store elements of the same data types. In this article, we will learn how we can create a vector of tuples in C++.

Example:

Input: 
Tuple1 ={10,A,5.3}  Tuple2= {20,B,6.5}
Output:  
Vector Elements:
Tuple 1: 10, A, 5.3
Tuple 2: 20, B, 6.5

Vector of Tuples in C++

To create a vector of tuples, we will have to first declare a vector of type tuple. It means that each element of the vector will be a tuple. Moreover, we also have to specify the type of tuple.

Syntax

vector<tuple<type1, type2, ...>> myVector.

We can simply use the std::make_tuple() method to insert the data into the vector.

For traversing, we can use the tuple::get() method to iterate over the elements of the tuple present in the vector.

C++ Program to Create a Vector of Tuples

// C++ program to create a vector of tuples
#include <iostream>
#include <vector>
#include <tuple>
using namespace std;

int main() {
    
    // Intialize a vector of tuples
    vector<tuple<int, char, float>> vecOfTuples;

    // Add tuples to the vector
    vecOfTuples.push_back(make_tuple(10, 'A', 3.14));
    vecOfTuples.push_back(make_tuple(20, 'B', 6.28));
    vecOfTuples.push_back(make_tuple(30, 'C', 9.42));
    vecOfTuples.push_back(make_tuple(40, 'D', 10.8));

    // Iterate over the vector and print each tuple
    int i=1;
      cout<<"Vector Elements:"<<endl;
    for (const auto& tuple : vecOfTuples) {
        // Access tuple elements using get<index>(tuple)
        cout << "Tuple "<<i<<": " << get<0>(tuple) << ", " << get<1>(tuple) << ", " << get<2>(tuple) << endl;
        i++;
    }
    return 0;
}

Vector Elements:
Tuple 1: 10, A, 3.14
Tuple 2: 20, B, 6.28
Tuple 3: 30, C, 9.42
Tuple 4: 40, D, 10.8

Time Complexity: O(N) where N is the number of tuples inside the vector
Auxiliary Space: O(N)