12.1

Write a function template for finding the minimum value contained in an array.

Answer
#include<iostream>
using namespace std;
const int size=5;
template <class T>
class vector
{
               T v[size];
               public:
                vector(){}
                vector(T *b);
                 void show();
                minimum(vector<T> &m);
};
template <class T>
vector<T>::vector(T *b)
{
         for(int i=0;i<size;i++)
           v[i]=b[i];
 
}
template<class T>
T vector<T>::minimum(vector<T> &m)
{
         int j=0;
         for(int k=1;k<size;k++)
           {
                    if(m.v[j]>m.v[k])
                     j=k;
           }
   return m.v[j];
}
template<class T>
void vector<T>::show()
{
                  cout<<"("<<v[0];
                  for(int i=1;i<size;i++)
                   cout<<","<<v[i];
                    cout<<")";
                   cout<<"\n";
}
int main()
{
 
              int x[size]={5,7,3,1,8};//size is 5;
             float y[size]={1.2,1.5,2.3,1.0,0.501};
             vector<int> v1;
             vector<float> v2;
            v1=x;
            v2=y;
         cout<<" minimum value = "<<v1.minimum(v1)<<" of array";
         v1.show();
         cout<<" minimum value = "<<v2.minimum(v2)<<" of array";
         v2.show();
 
      return 0;
}

OUTPUT

minimum value = 1 of array(5,7,3,1,8)
minimum value = 0.501 of array(1.2,1.5,2.3,1,0.501)

12.2

Write a class template to represent a generic vector. Include member functions to perform the following tasks:

  • (a) To create the vector
  • (b) To modify the value of a given element
  • (c) To multiply by a scalar value
  • (d) To display the vector in the following form (10, 20, 30 …)
Answer
#include<iostream>
#include<iomanip>
using namespace std;
template <class santo>
class vector
{
    float *p;
    int size;
    public:
    void creat_vector(santo a);
    void set_element(int i,santo value);
    void modify(void);
    void multiply(santo b);
    void display(void);
};
template <class santo>
void vector<santo>::creat_vector(santo a)
{
    size=a;
    p=new float[size];
}
template <class santo>
void vector<santo>::set_element(int i,santo value)
{
    p[i]=value;
}
 
template <class santo>
void vector<santo> :: multiply(santo b)
{
    for(int i=0;i<size;i++)
    p[i]=b*p[i];
}
template <class santo>
void vector<santo>:: display(void)
{
    cout<<"p["<<size<<"] = ( ";
      for(int i=0;i<size;i++)
      {
              if(i==size-1)
              cout<<p[i];
              else
               cout<<p[i]<<" , ";
 
      }
                                       cout<<")"<<endl;
}
 
template <class santo>
void vector<santo>::modify(void)
{
                            int i;
                           cout<<" to edit a given element enter position of the element : ";
                           cin>>i;
                           i--;
                           cout<<" Now enter new value of "<<i+1<<"th  element : ";
                           santo v;
                           cin>>v;
                           p[i]=v;
                           cout<<" Now new contents : "<<endl;
                           display();
 
                       cout<<" to delete an element enter position of the element :";
                         cin>>i;
                           i--;
 
                for(int j=i;j<size;j++)
                   {
    p[j]=p[j+1];
                    }
                 size--;
                cout<<" New contents : "<<endl;
                display();
}
 
int main()
{
    vector<float> hasib;
    int s;
    cout<<" enter size of vector : ";
    cin>>s;
    hasib.creat_vector(s);
    cout<<" enter "<<s<<" elements  one by one :"<<endl;
    for(int i=0;i<s;i++)
    {
                float v;
                cin>>v;
                hasib.set_element(i,v);
    }
    cout<<" Now contents  :"<<endl;
    hasib.display();
    cout<<" to multiply this vector by a scalar quantity enter this scalar quantity : ";
    float m;
    cin>>m;
    hasib.multiply(m);
    cout<<" Now contents : "<<endl;
    hasib.display();
    hasib.modify();
    return 0;
}

OUTPUT

enter size of vector : 4

enter 4 elements one by one :

4    3    2    5

Now contents :

p[4] = ( 4 , 3 , 2 , 5)

to multiply this vector by a scalar quantity enter this scalar quantity : 3

Now contents :

p[4] = ( 12 , 9 , 6 , 15)

to edit a given element enter position of the element : 2

Now enter new value of 2th element : 222

Now new contents :

p[4] = ( 12 , 222 , 6 , 15)

to delete an element enter position of the element :3

New contents :

p[3] = ( 12 , 222 , 15)

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