C Exercises: Compute the perimeter and area of a rectangle
C Basic Declarations and Expressions: Exercise-5 with Solution
Write a C program to compute the perimeter and area of a rectangle with a height of 7 inches. and width of 5 inches.
C programming: Perimeter of a rectangle
A perimeter is a path that surrounds a two-dimensional shape. The word comes from the Greek peri (around) and meter (measure). The perimeter can be used to calculate the length of fence required to surround a yard or garden. For rectangles or kites which have only two different side lengths, say x and y, the perimeter is equal to 2x + 2y
Pictorial Presentation:
C programming: Area of a rectangle
The area of a two-dimensional figure describes the amount of surface the shape covers. You measure area in square units of a fixed size, square units of measure are square inches, square centimeters, or square miles etc. The formula for the area of a rectangle uses multiplication: length • width = area. A rectangle with four sides of equal length is a square.
Pictorial Presentation:
C Code:
#include <stdio.h>
/* height and width of a rectangle in inches */
int width;
int height;
int area;
int perimeter;
int main() {
height = 7;
width = 5;
perimeter = 2*(height + width);
printf("Perimeter of the rectangle = %d inches\n", perimeter);
area = height * width;
printf("Area of the rectangle = %d square inches\n", area);
return(0);
}
Sample Output:
Perimeter of the rectangle = 24 inches Area of the rectangle = 35 square inches
Flowchart:
C Programming Code Editor:
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Next: Write a C program to compute the perimeter and area of a circle with a given radius.
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C Programming: Tips of the Day
Static variable inside of a function in C
The scope of variable is where the variable name can be seen. Here, x is visible only inside function foo().
The lifetime of a variable is the period over which it exists. If x were defined without the keyword static, the lifetime would be from the entry into foo() to the return from foo(); so it would be re-initialized to 5 on every call.
The keyword static acts to extend the lifetime of a variable to the lifetime of the programme; e.g. initialization occurs once and once only and then the variable retains its value - whatever it has come to be - over all future calls to foo().
Ref : https://bit.ly/3fOq7XP
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