Coursecrux

#include<stdio.h>
#include<conio.h>
void main()
{
	int ch;
    float radius, length, width, base, height, side;
    float area;

    printf("1. Area of circle");
    printf("\n2. Area of Rectangle");
    printf("\n3. Area of Triangle");
    printf("\n4. Area of Square");
    printf("\nEnter your choice\t:");
    scanf("%d",&ch);

    if(ch == 1)
    {
        printf("Enter radius of the circle\t:");
        scanf("%f",&radius);
        area = 3.14 * radius * radius;
        printf("\n area = %f",area);
    }
    else if(ch == 2)
    {
        printf("Enter the length and width of the rectangle\t:");
        scanf("%f %f",&length,&width);
        area = length * width;
        printf("\n area = %f",area);
    }
    else if(ch == 3)
    {
        printf("Enter the base and height of the rectangle\t:");
        scanf("%f %f",&base,&height);
        area = 0.5 * base * height;
        printf("\n area = %f",area);
    }
    else if(ch == 4)
    {
        printf("Enter side of the square\t:");
        scanf("%f",&side);
        area = side * side;
        printf("\n area = %f",area);
    }
    else
    {
        printf("Incorrect input");
    }

    getch();
}

********** Run1 ********** 

1. Area of circle
2. Area of Rectangle
3. Area of Triangle
4. Area of Square
Enter your choice       :1
Enter radius of the circle      :3

 area = 28.260000


********** Run2 ********** 

1. Area of circle
2. Area of Rectangle
3. Area of Triangle
4. Area of Square
Enter your choice       :3
Enter the base and height of the rectangle      :3
5

 area = 7.500000