C using Hp series and Right Angled Triangle and Area of Trapezium pro

Find the Sum of H.P Series

#include 

#include  

void main()

{

    int n;

    float i, sum, term;

    clrscr();

    printf("1 + 1 / 2 + 1 / 3 +......+1 / n \n");

    printf("Enter the value of n \n");

    scanf("%d", &n);

    sum = 0;

    for (i = 1; i <= n; i++)

    {

        term = 1 / i;

        sum = sum + term;

    }

    printf("the Sum of H.P Series is = %f", sum);

    getch();

}

Output

1 + 1 / 2 + 1 / 3 +......+1 / n

Enter the value of n

5

the Sum of H.P Series is = 2.283334

Find Area of a Right Angled Triangle

#include 

#include 

int main()

{

    float height, width;

    float area;

    clrscr();

    printf("Enter height and width of the given triangle:\n ");

    scanf("%f%f", &height, &width);

    area = 0.5 * height * width;

    printf("Area of right angled triangle is: %.3f\n", area);

    return 0;

    getch();

}

Output

Enter height and width of the given triangle:

 10 15

Area of right angled triangle is: 75.000

Find Area of Trapezium

#include 

#include 

int main()

{

    float a, b, h;

    float area;

    clrscr();

    printf("Enter the value for two bases & height of the trapezium: \n");

    scanf("%f%f%f", &a, &b, &h);

    area = 0.5 * (a + b) * h ;

    printf("Area of the trapezium is: %.3f", area);

    return 0; 

    getch();

}

Output

Enter the value for two bases and height of the trapezium :

10 15 20

Area of the trapezium is: 250.000

Find Area of Rhombus

#include 

#include  

int main()

{

    float diagonal1, diagonal2;

    float area;

    clrscr();

    printf("Enter diagonals of the given rhombus: \n ");

    scanf("%f%f", &diagonal1, &diagonal2);

    area = 0.5 * diagonal1 * diagonal2;

    printf("Area of rhombus is: %.3f \n", area);

    return 0; 

    getch();

}

Output

Enter diagonals of the given rhombus:

 30 40

Area of rhombus is: 600.000