# C Program to Calculate Area and Perimeter of Rectangle

Howdy readers, today you will learn how to write a program to calculate the area and perimeter of a rectangle using C Programming language.

A rectangle is a closed figure of four sides having two equal pairs of opposite sides and the angle formed by adjacent sides is 90 degrees.

The formula for the area, ‘A’ of a rectangle whose length and width are ‘L’ and ‘B’ respectively is the product ‘L x B’.

• Area of a Rectangle = (Length x Breadth) square units

The formula for the perimeter of a rectangle is:

• Perimeter of a Rectangle = 2(Length + Breadth) units

We will use the above formula in this tutorial to calculate the area and perimeter of the rectangle.

So, without any delay, let’s begin this tutorial.

## C Program to Calculate Area and Perimeter of Rectangle

C Program

```// C Program to Calculate Area and Perimeter of Rectangle
#include <stdio.h>
int main(){

printf("Enter the length of the rectangle: ");
scanf("%f", &length);
printf("Enter the breadth of the rectangle: ");

// Calculating area of the rectangle

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

// Printing result
printf("Area of the rectangle is: %.2f \n", area);
printf("Perimeter of the rectangle is: %.2f", perimeter);

return 0;
}
```

Output

```Enter the length of the rectangle: 4.6
Enter the breadth of the rectangle: 5.2
Area of the rectangle is: 23.92
Perimeter of the rectangle is: 19.60
```

Explanation

```    float length, breadth, area, perimeter;
```

We have declared four floating data type variables named length, breadth, area and perimeter.

```    // Asking for input
printf("Enter the length of the rectangle: ");
scanf("%f", &length);
printf("Enter the breadth of the rectangle: ");
```

The user is asked to enter the length and breadth of the rectangle.

```    // Calculating area of the rectangle
```

We calculate the area of the rectangle using the formula, area = length x breadth.

```    // Calculating perimeter of the rectangle
perimeter = 2 * (length + breadth);
```

Similarly, the perimeter of the rectangle is calculated using the formula, perimeter = 2 x (length + breadth).

```    // Printing result
printf("Area of the rectangle is: %.2f \n", area);
printf("Perimeter of the rectangle is: %.2f", perimeter);
```

At the end, the result is displayed on the screen using printf() function.

## Conclusion

I hope after reading this tutorial, you understand how to write a program to calculate area and perimeter of the rectangle using C Programming language.

If you face any difficulty while understanding this program, then let us know in the comment section. We will be delighted to solve your queries.