#include<iostream.h> #include<conio.h> #define phi 3.14 int area(int,int); float area(int); void main() { int a,b,c,cho; clrscr(); cout<<"\t What do you want to do?\n"; cout<<"1. area of rectangle"<<endl; cout<<"2. area of circle"<<endl; cout<<"Choice:"; cin>>cho; switch(cho) { case 1: cout<<"Enter lengt and breath (with white space):"; cin>>a>>b; cout<<"Area of RECTANGLE:"<<area(a,b); break; case 2: cout<<"Enter radius:"; cin>>c; cout<<"Area of CIRCLE:"<<area(c); break; } getch(); } int area(int x,int y) { return (x*y); } float area(int s) { return (phi*s*s); }