11/11/25 04:00:13.58
>>641
#include <stdio.h>
#define PI 3.14159265358979323846
#define menseki(r) ((PI)*r*r)
int main()
{
double r = 5;
printf("半径5cmの円の面積 = %.5lf\n",menseki(r));
return 0;
}
11/11/25 04:00:13.58
>>641
#include <stdio.h>
#define PI 3.14159265358979323846
#define menseki(r) ((PI)*r*r)
int main()
{
double r = 5;
printf("半径5cmの円の面積 = %.5lf\n",menseki(r));
return 0;
}