C++ Program to find cube of a number using a function

Program

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

void main()
{
clrscr();                                                //to clear screen
float cube(float);                                  //function prototype
float a,cu;
cout<<“Enter any number:”;
cin>>a;
cu=cube(a);                                         //function calling
cout<<“nCube of “<<a<<” is “<<cu;
getch();
}

float cube(float a)
{
float cu;
cu=a*a*a;
return(cu);
}

Output