insert vector to end of vector c++
vector<int> a;
vector<int> b;
a.insert(a.end(), b.begin(), b.end());
// or
a.insert(std::end(a), std::begin(b), std::end(b));insert vector to end of vector c++
vector<int> a;
vector<int> b;
a.insert(a.end(), b.begin(), b.end());
// or
a.insert(std::end(a), std::begin(b), std::end(b));insert vector
#include <iostream>
#include <vector>
void print_vec(const std::vector<int>& vec)
{
for (auto x: vec) {
std::cout << ' ' << x;
}
std::cout << 'n';
}
int main ()
{
std::vector<int> vec(3,100);
print_vec(vec);
auto it = vec.begin();
it = vec.insert(it, 200);
print_vec(vec);
vec.insert(it,2,300);
print_vec(vec);
// "it" no longer valid, get a new one:
it = vec.begin();
std::vector<int> vec2(2,400);
vec.insert(it+2, vec2.begin(), vec2.end());
print_vec(vec);
int arr[] = { 501,502,503 };
vec.insert(vec.begin(), arr, arr+3);
print_vec(vec);
}Copyright © 2021 Codeinu
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