C Language
#include<stdio.h>
#include<conio.h>
void main()
{
int l, b, a;
clrscr();
printf("Enter sides of rectangle");
scanf("%d%d", &l, &b);
a=l*b;
printf("Area of rectangle :%d",a);
getch();
}
/*OUTPUT*/
Enter sides of rectangle 10
20
Area of rectangle : 200