C/code/计算过道和栏杆的造价.c

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

#define PI 3.14159
#define FENCE_COST_PER_METER 55
#define PATH_COST_PER_SQUARE_METER 40
#define PATH_WIDTH 3

int main() {
    double pool_radius;
    double total_radius, fence_cost, path_cost;
    double pool_area, total_area, path_area;

    scanf("%lf", &pool_radius);

    // 计算总半径（游泳池半径 + 过道宽度）
    total_radius = pool_radius + PATH_WIDTH;

    // 计算栅栏造价
    fence_cost = 2 * PI * total_radius * FENCE_COST_PER_METER;

    // 计算过道面积和造价
    pool_area = PI * pool_radius * pool_radius;
    total_area = PI * total_radius * total_radius;
    path_area = total_area - pool_area;
    path_cost = path_area * PATH_COST_PER_SQUARE_METER;

    // 输出结果，保留整数
    printf("%d %d\n", (int)round(path_cost), (int)round(fence_cost));

    return 0;
}