COMPUTER INNOVATIONS: Find the Areas of Different Geometrical Figures

Find the Areas of Different Geometrical Figures

#include

#include

void main()

    int fig_code;

    float side, base, length, breadth, height, area, radius;

    clrscr();

    printf("-------------------------\n");

    printf(" 1 --> Circle\n");

    printf(" 2 --> Rectangle\n");

    printf(" 3 --> Triangle\n");

    printf(" 4 --> Square\n");

    printf("-------------------------\n");

    printf("Enter the Figure code\n");

    scanf("%d", &fig_code);

    switch(fig_code)

    case 1:

        printf("Enter the radius\n");

        scanf("%f", &radius);

        area = 3.142 * radius * radius;

        printf("Area of a circle = %f\n", area);

        break;

    case 2:

        printf("Enter the breadth and length\n");

        scanf("%f %f", &breadth, &length);

        area = breadth * length;

        printf("Area of a Reactangle = %f\n", area);

        break;

    case 3:

        printf("Enter the base and height\n");

        scanf("%f %f", &base, &height);

        area = 0.5 * base * height;

        printf("Area of a Triangle = %f\n", area);

        break;

    case 4:

        printf("Enter the side\n");

        scanf("%f", &side);

        area = side * side;

        printf("Area of a Square=%f\n", area);

        break;

    default:

        printf("Error in figure code\n");

        break;

    getch();

Output

-------------------------

 1 --> Circle

 2 --> Rectangle

 3 --> Triangle

 4 --> Square

-------------------------

Enter the Figure code

Enter the radius

Area of a circle = 2827.800049

-------------------------

 1 --> Circle

 2 --> Rectangle

 3 --> Triangle

 4 --> Square

-------------------------

Enter the Figure code

Enter the breadth and length

20 30

Area of a Reactangle = 600.000000

-------------------------

 1 --> Circle

 2 --> Rectangle

 3 --> Triangle

 4 --> Square

-------------------------

Enter the Figure code

Enter the base and height

45 80

Area of a Triangle = 1800.000000

-------------------------

 1 --> Circle

 2 --> Rectangle

 3 --> Triangle

 4 --> Square

-------------------------

Enter the Figure code

Enter the side

Area of a Square=10000.000000

Calculate the Sum of cos(x) Series

#include

#include

#include

void main()

    int n, x1, i, j;

    float x, sign, cosx, fact;

    clrscr();

    printf("Enter the number of the terms in a series\n");

    scanf("%d", &n);

    printf("Enter the value of x(in degrees)\n");

    scanf("%f", &x);

    x1 = x;

    x = x * (3.142 / 180.0);

    cosx = 1;

    sign = -1;

    for (i = 2; i <= n; i = i + 2)

        fact = 1;

        for (j = 1; j <= i; j++)

            fact = fact * j;

        cosx = cosx + (pow(x, i) / fact) * sign;

        sign = sign * (-1);

    printf("Sum of the cosine series = %7.2f\n", cosx);

    printf("The value of cos(%d) using library function = %f\n", x1, cos(x));

    getch();

    getch();

Output

Enter the number of the terms in a series

Enter the value of x(in degrees)

Sum of the cosine series =   -0.23

The value of cos(90) using library function = -0.000204

Find the Volume and Surface Area of cylinder

#include

#include

#include

int main()

    float radius, height;

    float surface_area, volume;

    clrscr();

    printf("Enter  value for  radius and height of a cylinder : \n");

    scanf("%f%f", &radius, &height);

    surface_area = 2 * (22 / 7) * radius * (radius + height);

    volume = (22 / 7) * radius * radius * height;

    printf("Surface area of cylinder is: %.3f", surface_area);

    printf("\n Volume of cylinder is : %.3f", volume);

    return 0;

    getch();

Output

Enter  value for  radius and height of a cylinder :

15 17

Surface area of cylinder is: 2880.000

Volume of cylinder is : 11475.000

Find the Nth Fibonacci Number using Recursion

#include

#include

int fibo(int);

int main()

    int num;

    int result;

    clrscr();

    printf("Enter the nth number in fibonacci series: ");

    scanf("%d", &num);

    if (num < 0)

        printf("Fibonacci of negative number is not possible.\n");

    else

        result = fibo(num);

        printf("The %d number in fibonacci series is %d\n", num, result);

    return 0;

int fibo(int num)

    if (num == 0)

        return 0;

    else if (num == 1)

        return 1;

    else

        return(fibo(num - 1) + fibo(num - 2));

    getch();

Output

Enter the nth number in fibonacci series: 8

The 8 number in fibonacci series is 21

Enter the nth number in fibonacci series: 12

The 12 number in fibonacci series is 144

Find HCF of a given Number using Recursion

#include

#include

int hcf(int, int);

int main()

    int a, b, result;

    clrscr();

    printf("Enter the two numbers to find their HCF: ");

    scanf("%d%d", &a, &b);

    result = hcf(a, b);

    printf("The HCF of %d and %d is %d.\n", a, b, result);

int hcf(int a, int b)

    while (a != b)

        if (a > b)

            return hcf(a - b, b);

        else

            return hcf(a, b - a);

    return a;

    getch();

Output

Enter the two numbers to find their HCF: 24 36

The HCF of 24 and 36 is 12.

COMPUTER INNOVATIONS