Programming/vector.cpp at dev · vinitraj10/Programming · GitHub

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#include<iostream>
using namespace std;

class _vector {


	int* vec;
        int len;
  public:
  _vector(){
    vec = new int[100];

     len = 0;

    }

   _vector(int no){
        vec = new int[100];
        vec[0] = no;
        len++;

   }
    void add_front(int no){
         if (len == 0){
           vec[len] = no;
           ++len;
         }

         else {
            for(int i=len;i>0;i--){
                vec[i] = vec [i-1];
            }

            vec[0] = no;
            ++len;
          }
     }


     void add_rear(int no){

         if (len < 100)
             vec[len] = no;
             ++len;
     }

    void display(){
      for (int i=0;i<len;i++)
      	cout <<vec[i]<<"\t";
    }

    void capacity(){
     cout<<"\n Capacity of vector: " <<len <<endl;
    }

 };


 int main() {
     _vector v1 ;
     v1.add_front(4);
     v1.add_front(6);
     v1.add_front(9);
     v1.add_rear(12);
     v1.add_rear(10);
     v1.display();
     v1.capacity();
 }