POJ1005

本题也没什么难度，解决思想就是根据给定的(x, y)坐标值，计算半圆的面积，然后除以50，向上取整。

#include

#include


#define PI 3.141592654


int main(int argc, char const *argv[])
{
int n ;
double x, y ;
double area ;
int count = 1 ;
FILE *fp = fopen( "in.txt", "r" ) ;
fscanf( fp, "%d", &n ) ;


// scanf( "%d", &n ) ;


while( n-- )
{
fscanf( fp, "%lf %lf", &x, &y ) ;
// scanf( "%lf %lf", &x, &y ) ;
area = 0.5 * PI * ( x * x + y * y ) ;
// printf("area = %.2lf\n", area);
printf("Property %d: This property will begin eroding in year %g.\n", count++, ceil(area / 50));


}


printf("END OF OUTPUT.\n");


return 0;
}