Area and perimeter of a rectangle in C

/* 	C program to calculate the area and perimeter 
	of rectangle 
*/

#include <stdio.h>

int main()
{
    /*declare the variables*/
    float length;
    float breadth;
    float area;
    float perimeter;

    /*length input*/
    printf("Enter the length: ");
    scanf("%f", &length);

    /*breadth input*/
    printf("Enter the breadth: ");
    scanf("%f", &breadth);

    /*Calculating the area and rectangle*/
    area = length * breadth;
    perimeter = (2 * length) + (2 * breadth);

    /*printing the result*/
    printf("Area of the rectangle: %.02f\n", area);
    printf("Perimeter of rectangle: %.02f\n", perimeter);

    return 0;
}

Output

First run:
Enter the length: 5
Enter the breadth: 4 
Area of the rectangle: 20.00 
Perimeter of rectangle: 18.00

Second run:
Enter the length: 2.55 
Enter the breadth: 10
Area of the rectangle: 25.50 
Perimeter of rectangle: 25.10