- 965 名前：デフォルトの名無しさん mailto:sage [2008/02/05(火) 20:04:22 ]
- >>963
#include<stdio.h>
#include<math.h>
double calc_theta(int hour, int minute){
double degree_hour, degree_minute, theta;
degree_hour=(hour+minute/60.0)*30.0;
degree_minute=minute*6.0;
theta=fmod(degree_hour-degree_minute, 360.0);
if(theta<0.0) theta+=360.0;
if(theta>180.0) theta=360.0-theta;
return theta;
}
void get_value(int *pvalue, const char *message){
printf("%s", message);
scanf("%d", pvalue);
}
void get_hour(int *phour){
get_value(phour, "input h:");
}
void get_minute(int *pminute){
get_value(pminute, "input m:");
}
int main(void){
int hour, minute;
get_hour(&hour);
get_minute(&minute);
printf("\n%02d:%02d (%.1f°)\n", hour, minute, calc_theta(hour, minute));
return 0;
}
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