#include <stdio.h>
#include <stdlib.h>
#include <math.h>

float output()
{
    float r, h, surface_area;
    printf("Enter the radius of the cylinder:-\n");
    scanf("%f", &r);
    printf("Enter the height of the cylinder:-\n");
    scanf("%f", &h);

    surface_area = (2 * M_PI * r * h) + (2 * M_PI * r * r); //M_PI is MATH CONSTANT PI
    return surface_area;
}

float main()
{
    system("cls");
    float dis;
    dis = output();
    printf("Surface area of cylinder is:- %f", dis);
    return 0;
}

//........Coded by YASH ALLAPURIA