CPP-EX55

Write a c++ program to define function power to raise a  number m to a power n the function takes a double value for m. &   integer value for n & return the result correctly use a default    value of 2 for n to make  the function calculate squares  when this argument is omitted.

    #include<iostream.h>
    #include<conio.h>
    #include<math.h>

    double power(double a , int b=2)//fun. overloading
    {
    return pow(a,b);
    }

    void main()
    {
    clrscr();
    double a;
    int b;
    char ch;

    cout<<"\n Enter the number:-";
    cin>>a;

    cout<<"\n Enter your choice:-";
    cin>>ch;

    if(ch=='y')
    {
    cout<<"\n Enter the power:-";
    cin>>b;

    cout<<"\n (a^b)=\t"<<power(a,b);
    }

    else
    {
    cout<<"\n\n (a^b)=\t"<<power(a);
    }
    getch();
    }