The perimeter of a rectangle is the total length of all the sides of the rectangle. Hence, we can find the perimeter by adding all four sides of a rectangle. Perimeter of the given rectangle is l + w + l + w = 2 * (l + w).
/**
* C program to find perimeter of rectangle
*/
#include"stdio.h"
int main()
{
float length, width, perimeter;
/*
* Reads length and width of rectangle from user
*/
printf("Enter length of the rectangle: ");
scanf("%f", &length);
printf("Enter width of the rectangle: ");
scanf("%f", &width);
/* Calculates perimeter of rectangle */
perimeter = 2 * (length + width);
/* Prints perimeter of rectangle */
printf("Perimeter of rectangle = %f units \n", perimeter);
return 0;
} Enter length of the rectangle: 6
Enter width of the rectangle: 5
Perimeter of rectangle = 22.000000 units
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First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.