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C Program To Find Whether Area of Rectangle Is Greater Than Its Perimeter

Given the length and breadth(or width) of a rectangle, write a C program to find whether the area of the rectangle is greater than its perimeter. For example, the area of the rectangle with length = 5 and breadth = 4 is greater than its perimeter.

Note:
Rectangle is a quadrilateral(i.e., it has 4 sides). And all the 4 angles of the rectangle are of 90 degree. To calculate area of a rectangle we need its length and width/breadth.

Formula To Calculate Area of a Rectangle

Area = Length * Width;
area of rectangle

Formula To Calculate Perimeter of a Rectangle

Perimeter = 2 * (Length + Width);
perimeter of rectangle

Length: is the length of the longest side of the rectangle.
width: is the length of the smallest side of the rectangle.

Expected Output for the Input

User Input:
Enter length of the Rectangle
5
Enter width of the Rectangle
4

Output:
yes, area(20.00) is greater than its perimeter(18.00)

Video Tutorial: C Program To Find Whether Area of Rectangle Is Greater Than Its Perimeter

[youtube https://www.youtube.com/watch?v=TmnErbGucfk]

YouTube Link: https://www.youtube.com/watch?v=TmnErbGucfk [Watch the Video In Full Screen.]

Source Code: C Program To Find Whether Area of Rectangle Is Greater Than Its Perimeter

#include < stdio.h >

int main()
{
    float length, width, area, perimeter;

    printf("Enter length of the Rectangle\n");
    scanf("%f", &length);

    printf("Enter width of the Rectangle\n");
    scanf("%f", &width);

    area      =     (length * width);
    perimeter = 2 * (length + width);

    if(area > perimeter)
    {
        printf("yes, area(%0.2f) is greater than its perimeter(%0.2f)\n", 
               area, perimeter);
    }
    else
    {
        printf("Area(%0.2f) is not greater than its perimeter(%0.2f)\n", 
               area, perimeter);
    }

    return 0;
}

Output:
Enter length of the Rectangle
12
Enter width of the Rectangle
6
yes, area(72.00) is greater than its perimeter(36.00)

Logic To Find Whether Area of Rectangle Is Greater Than Its Perimeter

We ask the user to enter length and breadth/width of the rectangle and store it inside address of variable length and width. Next we calculate area and perimeter of the rectangle using the user entered value for length and width of the rectangle.

Area = Length * Width;
Perimeter = 2 * (Length + Width);

Next we check if the value present in variable area is greater than the value of perimeter or not, and output the result accordingly to the console window.

For list of all c programming interviews / viva question and answers visit: C Programming Interview / Viva Q&A List

For full C programming language free video tutorial list visit:C Programming: Beginner To Advance To Expert

C program To Find Area of Right Angled Triangle

Lets write a C program to calculate area of a right angled Triangle, by asking the user to enter its width and height.

Formula To Find Area of Right Angled Triangle

Area = (width * Height) / 2.0;

Area = (width * Height * 0.5);

Note: If we divide an expression or number by 2, it’ll return only the integer part and the decimal part will be discarded. So we are dividing the expression by 2.0 (which is of type double).

C program To Find Area of Right Angled Triangle

[youtube https://www.youtube.com/watch?v=Vjf7zgwiXU8]

YouTube Link: https://www.youtube.com/watch?v=Vjf7zgwiXU8 [Watch the Video In Full Screen.]

Source Code: C program To Find Area of Right Angled Triangle

#include < stdio.h >

int main()
{
    float h, w, area;

    printf("Enter height and width of a right angled triangle\n");
    scanf("%f%f", &h, &w);

    area = (h * w) / 2.0;

    printf("Area of a Right Angled Triangle is %f\n", area);

    return 0;
}

Output:
Enter height and width of a right angled triangle
10
5
Area of a Right Angled Triangle is 25.000000

Validate the Input and Find Area of Triangle: C Program

#include < stdio.h >

int main()
{
    float h, w, area;

    printf("Enter height and width of a right angled triangle\n");
    scanf("%f%f", &h, &w);

    if(w == 0 || h == 0)
    {
        printf("Invalid Input\n");
    }
    else
    {
        area = (h * w) / 2.0;
        printf("Area of a Right Angled Triangle is %f\n", area);
    }

    return 0;
}

Output 1:
Enter height and width of a right angled triangle
10
5
Area of a Right Angled Triangle is 25.000000

Output 2:
Enter height and width of a right angled triangle
0
5
Invalid Input

For list of all c programming interviews / viva question and answers visit: C Programming Interview / Viva Q&A List

For full C programming language free video tutorial list visit:C Programming: Beginner To Advance To Expert

Perimeter of Rectangle: C Program

The length and breadth / width of a rectangle are entered through the keyboard. Write a program to calculate the perimeter of the rectangle.

To get perimeter of a rectangle, we add the length and width of rectangle and then multiply it with 2. In other words, perimeter is the addition of length of all the sides of a rectangle.

Note: Perimeter of a Rectangle is calculated using the formula
Perimeter = 2 * (Length + Width);

Length: is the length of the longest side of the rectangle.
width: is the length of the smallest side of the rectangle.

Find Perimeter of a Rectangle: C Program

[youtube https://www.youtube.com/watch?v=EnQTDhvimd0]

YouTube Link: https://www.youtube.com/watch?v=EnQTDhvimd0 [Watch the Video In Full Screen.]

Source Code: Find Perimeter of a Rectangle: C Program

#include < stdio.h >

int main()
{
    float length, width, perimeter;

    printf("Enter length of Rectangle\n");
    scanf("%f", &length);

    printf("Enter width of Rectangle\n");
    scanf("%f", &width);

    perimeter = 2 * (length + width);

    printf("Perimeter of Rectangle is %f\n", perimeter);

    return 0;
}

Output:
Enter length of Rectangle
12
Enter width of Rectangle
6
Perimeter of Rectangle is 36.000000

For list of all c programming interviews / viva question and answers visit: C Programming Interview / Viva Q&A List

For full C programming language free video tutorial list visit:C Programming: Beginner To Advance To Expert

Area of Rectangle: C Program

The length and breadth / width of a rectangle are entered through the keyboard. Write a program to calculate the area of the rectangle.

Rectangle is a quadrilateral(i.e., it has 4 sides). And all the 4 angles of the rectangle are of 90 degree. To calculate area of a rectangle we need its length and width/breadth.

Note: Area of a Rectangle is calculated using the formula
Area = Length * Width;

Length: is the length of the longest side of the rectangle.
width: is the length of the smallest side of the rectangle.

Find Area of a Rectangle: C Program

[youtube https://www.youtube.com/watch?v=yvgxG0hGqsY]

YouTube Link: https://www.youtube.com/watch?v=yvgxG0hGqsY [Watch the Video In Full Screen.]

Source Code: Find Area of a Rectangle: C Program

#include < stdio.h >

int main()
{
    float length, width, area;

    printf("Enter length of rectangle\n");
    scanf("%f", &length);

    printf("Enter width of rectangle\n");
    scanf("%f", &width);

    area = length * width;

    printf("Area of Rectangle is %f\n", area);

    return 0;
}

Output:
Enter length of rectangle
12
Enter width of rectangle
6
Area of Rectangle is 72.000000

For list of all c programming interviews / viva question and answers visit: C Programming Interview / Viva Q&A List

For full C programming language free video tutorial list visit:C Programming: Beginner To Advance To Expert

Canvas Basics: HTML5

We shall start exploring more about Canvas element of HTML5.
It’s designed to draw graphics on the fly, using Javascript.

Canvas is like a placeholder for graphics. We place a context upon canvas, upon which we draw our graphics – lines, circles, triangle, pictures etc.

HTML file
index.html

< !DOCTYPE HTML>
<html>
 <head>
  <title>Canvas: HTML5</title>
  <meta charset="utf-8"/>
  <link href="myStyle.css" rel="stylesheet"/>
 </head>
 <body>
 
  <canvas id="holder" width="300" height="200">
    Please upgrade your browser!
  </canvas>
 
</body>
</html>

Here we have attached a style sheet to index.html
and we have the canvas element with an id, width and a height property applied to it.

We can specify some text in-between the opening and closing canvas tag, which shows up in the browser which doesn’t support HTML5’s canvas element.

CSS file
myStyle.css

1
2
3

canvas {
border: 3px groove black;
}

Here we’re applying some basic style to our canvas.

Since canvas is transparent by nature, we can’t see it unless we give it a border or fill some color into it. So, using CSS we apply 3px wide black border, for the purpose of illustration.

Canvas Basics: HTML5

[youtube https://www.youtube.com/watch?v=2lJqB9RikYo]

YouTube Link: https://www.youtube.com/watch?v=2lJqB9RikYo [Watch the Video In Full Screen.]

CSS width and height
We could even assign width and height property of canvas element via CSS, but it is not the proper way to do it.

We must give width and height property inside HTML document itself – as canvas property.

If you assign width and height via CSS, it’ll either stretch or shrink depending on the actual canvas width and height: which looks weird.