how to use vector cpp code example
Example 1: how to create a vector in c++
#include <vector>
using namespace std;
int main()
{
vector<int> vect;
vect.push_back(10);
for (int x : vect)
cout << x << " ";
return 0;
}
Example 2: vector in c++
vector<int> g1;
for (int i = 1; i <= 5; i++)
g1.push_back(i);
cout << "Output of begin and end: ";
for (auto i = g1.begin(); i != g1.end(); ++i)
cout << *i << " ";
cout << "\nOutput of cbegin and cend: ";
for (auto i = g1.cbegin(); i != g1.cend(); ++i)
cout << *i << " ";
cout << "\nOutput of rbegin and rend: ";
for (auto ir = g1.rbegin(); ir != g1.rend(); ++ir)
cout << *ir << " ";
Example 3: how to use vectors c++
#include <iostream>
#include <vector>
using namespace std;
int main() {
const int size = 4;
vector<int> myVect (size, 4);
for (int i=0; i<size; i++) {
cout << "Vector index(" << i <<") is: "<< myVect[i] << endl;
}
return 0;
}