C Program to Calculate Area of a Rectangle

Program :-

#include<stdio.h>
main()
{
   float b,l,area;
   printf("enter the breadth and the length : \n");
   scanf("%f %f ",&b,&l);
   printf("area =  %f ", b * l);
}

Output :- 

enter the breadth and length :
3
4
area = 12