- 588 名前：デフォルトの名無しさん mailto:sage [2009/07/04(土) 05:08:00 ]
- >>586
1.
int sum1toN(int n)
{
int i, s;
for(i = 1, s = 0; i <= n; i++){
s += i;
}
return s;
}
2.
#include <stdio.h>
#define PAI 3.14159
void circle(double r, double *enshu, double *menseki);
int main(void){
double r, enshu, menseki;
printf("半径を入力 >>");
scanf("%lf", &r);
circle(r, &enshu, &menseki);
printf("円周 = %f 面積 = %f\n"
, enshu, menseki);
return 0;
}
void circle(double r, double *enshu, double *menseki)
{
*enshu = 2.0 * PAI * r;
*menseki = PAI * r * r;
return;
}
|
 |
