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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. int main(){
  5.  
  6.     std::vector <int> vector1;
  7.     std::vector <int> vector2;
  8.  
  9. //    int vector1_1addition;                                Note: These lines are unnecessary
  10. //    int vector1_2addition;  
  11. //
  12. //    std::cin >> vector1_1addition; //add 10
  13. //    std::cin >> vector1_2addition; //add 20
  14.  
  15.     vector1.push_back (10);
  16.     vector1.push_back (20);
  17.  
  18.     std::cout << "The numbers in vector 1 are: " << vector1.at(0) <<" " << vector1.at(1) <<std::endl;
  19.     std::cout << "The size of the vector 1 is: " << vector1.size() << std::endl;
  20.  
  21. //    int vector2_1addition;                                    Note: These lines are unnecessary
  22. //    int vector2_2addition;
  23. //
  24. //    std::cin >> vector2_1addition; //add 100
  25. //    std::cin >> vector2_2addition; //add 200
  26.  
  27.     vector2.push_back (100);
  28.     vector2.push_back (200);
  29.  
  30.     std::cout << "The numbers in vector 2 are: " << vector2.at(0) << " " << vector2.at(1) <<std::endl;
  31.     std::cout << "The size of vector 2 is: " << vector2.size() << std::endl;
  32.  
  33.     std::vector <std::vector <int> > vector_2d;
  34.  
  35.     vector_2d.push_back(vector1);
  36.     vector_2d.push_back(vector2);
  37.  
  38.     std::cout << " The 1st row elements in the 2 dimensional vector are: " << vector_2d.at(0).at(0)  << " "  << vector_2d.at(1).at(0) << std::endl;
  39.     std::cout << " The 1st row elements in the 2 dimensional vector are: " << vector_2d.at(0).at(1)  << " "  << vector_2d.at(1).at(1) << std::endl;
  40.  
  41.     vector1.at(0) = 1000;
  42.  
  43.     std::cout << " The new elements in row 1 of the 2 dimensional vector are: " << vector_2d.at(0).at(0)  << " "  << vector_2d.at(1).at(0) << std::endl;
  44.     std::cout << " The new elements in row 2 of the 2 dimensional vector are: " << vector_2d.at(0).at(1)  << " "  << vector_2d.at(1).at(1) << std::endl;
  45.  
  46.     std::cout << " The new elements in vector 1 are: " << vector1.at(0) << " " << vector1.at(1) << std::endl;
  47.  
  48.     system("pause");
  49.  
  50.  
  51.     return 0;
  52. }
Success #stdin #stdout #stderr 0s 15240KB
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stdin
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Standard input is empty
stdout
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The numbers in vector 1 are: 10 20
The size of the vector 1 is: 2
The numbers in vector 2 are: 100 200
The size of vector 2 is: 2
 The 1st row elements in the 2 dimensional vector are: 10 100
 The 1st row elements in the 2 dimensional vector are: 20 200
 The new elements in row 1 of the 2 dimensional vector are: 10 100
 The new elements in row 2 of the 2 dimensional vector are: 20 200
 The new elements in vector 1 are: 1000 20
stderr
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sh: 1: pause: not found
https://ideone.com/cdrZdK
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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