Question

How to insert element at the beginning of a list in C++

Answer 1

#include <iostream>
#include <list>

void printList(std::list<int> const &l) {
    for (auto const &n: l) {
        std::cout << n << " ";
    }
}
 
int main() {
    std::list<int> l = { 5, 2, 7, 1, 9, 3 };

    l.insert(l.begin(), 700);
    
    printList(l);
    
    return 0;
}
 
 
 
/*
run:
 
700 5 2 7 1 9 3 
 
*/

 

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