Program to calculate area of triangle, rectangle and circle in C++
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
float r,ac,at,ar,b,h,lt,bd;
cout<<"\nEnter base and height of Triangle :: ";
cin>>b>>h;
at=0.5*b*h;
cout<<"\n\tArea of Triangle is "<<at;
cout<<"\n\nEnter radius of Circle :: ";
cin>>r;
ac=3.14*r*r;
cout<<"\n\tArea of Circle is "<<ac;
cout<<"\n\nEnter Length and Breadth of Rectangle :: ";
cin>>lt>>bd;
ar=lt*bd;
cout<<"\n\tArea of Rectangle is "<<ar;
getch();
}
OUTPUT::
Enter base and height of Triangle :: 5 6
Area of Triangle is 15
Enter radius of Circle :: 3
Area of Circle is 28.26
Enter Lenght and Breadth of Rectangle : 2 5
Area of Rectangle is 10