Course Introduction
Programs for practice
Following C++ program ask to the user to enter the length and breadth of the rectangle to calculate and display the area and perimeter of the rectangle:
Source Code: Calculate Area and Perimeter of Rectangle
/* C++ Program - Calculate Area and Perimeter of Rectangle */
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int len, bre, peri, area;
cout<<"Enter length and breadth of the rectangle :";
cin>>len>>bre;
area=len*bre;
peri=(2*len)+(2*bre);
cout<<"Area = "<<area<<"\nPerimeter="<<peri;
getch();
}
Output
Enter length and breadth of the rectangle :
6
5
Area= 30
Perimeter = 22
Source Code: Calculate Area and Perimeter of Square in C++
/* C++ Program - Calculate Area and Perimeter of Square */
#include<iostream.h>
#include<conio.h>
void main()
{
clrscr();
int side, peri, area;
cout<<"Enter length of a side of square :";
cin>>side;
area=side*side;
peri=4*side;
cout<<"Area = "<<area<<"\nPerimeter="<<peri;
getch();
}
Output
Enter length of a side of square :4 Area=16 Perimeter = 16
