Write a function power() to raise a number m to a power n

```/*Write a function power() to raise a number m to a power n.  The
function takes a double value for m and int value for n and returns
the result correctly.  Use a default value of 2 for n to make the
function to calculate squares when this argument is omitted.
Write a main that gets the values of m and n from the user to test
the function.*/

#include <iostream.h>
#include <conio.h>
void main()
{
double power(double m,int n=2);
clrscr();
cout<<endl<<endl<<endl;
int choice,m,n;
double result;
do
{
cout<<\"\\n\\n\\nCHOICES\\n\\n\";
cout<<\"1)    Only Value of M\\n\";
cout<<\"2)    Value for both M and N\\n\";
cout<<\"3)    QUIT\\n\";
cout<<\"ENTER YOUR CHOICE:-\";
cin>>choice;
clrscr();
cout<<endl<<endl<<endl;
switch(choice)
{
case 1 : cout<<\"Enter Value for M:-\";
cin>>m;
result=power(m);
cout<<\"Power function when default argument is used =\"<<result;
break;
case 2 : cout<<\"Enter Value for M and N:-\";
cin>>m>>n;
result=power(m,n);
cout<<\"Power function when actual argument is use =\"<<result;
break;
case 3 : goto out;
default: cout<<\"Entered Value is Invalid, Try again\";
}
}while(choice!=3);
out:
}

double power(double m,int n)
{
double pow=1,k=0;
for(int i=0;i<n;i++)
{
pow=pow*m;
}
return(pow);
}
```

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