#include<stdio.h>
#define PI 3.141592
int main()
{
float major, minor, area;
/* Reading length of major axis */
printf("Enter length of major axis: ");
scanf("%f", &major);
/* Reading length of minor axis */
printf("Enter length of minor axis: ");
scanf("%f", &minor);
/* Calculating area of an ellipse */
area = PI * major * minor;
/* Displaying result */
printf("Area of an ellipse = %0.4f", area);
return 0;
}
Output
Enter length of major axis: 8 Enter length of minor axis: 4 Area of an ellipse = 100.5309