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  1. #include <iostream>
  2. #include <vector>
  3. using namespace std;
  4.  
  5. int main() {
  6.     vector<int> v;  // a vector of integers
  7.  
  8.     // Adding elements
  9.     v.push_back(10);
  10.     v.push_back(20);
  11.     v.push_back(30);
  12.  
  13.     // Printing elements
  14.     cout << "Vector elements: ";
  15.     for(int i=0; i<v.size(); i++) {
  16.         cout << v[i] << " ";
  17.     }
  18.     cout << endl;
  19.  
  20.     // Accessing an element
  21.     cout << "First element: " << v[0] << endl;
  22.  
  23.     // Removing last element
  24.     v.pop_back();
  25.  
  26.     cout << "After pop_back(): ";
  27.     for(int x : v) {
  28.         cout << x << " ";
  29.     }
  30.     cout << endl;
  31.  
  32.     return 0;
  33. }
Success #stdin #stdout 0.01s 5320KB
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stdin
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Standard input is empty
stdout
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Vector elements: 10 20 30 
First element: 10
After pop_back(): 10 20
https://ideone.com/L2AMmT
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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