The Angle

来源：百度知道 编辑：UC知道 时间：2024/06/06 13:00:19
The interval angle between the hour hand and the minute hand is always among 0 degree and 180 degree(including 0 and 180 degree). For example, when it's 12 o'clock, the angle of the two hands is 0 while 6:00 is 180 degree. Try to calculate any degree when it's between 12:00 to 11:59.

Input
The input data are of various situations. Every team consists of two numbers : the first number stands for the hour(great than 0 and less than or equal to 12) and second represents the minute( among [0, 59]). The input ends when the two numbers are both zeros.
Output
Print out the minimum angle between the two hands with the normal time form outputed.
Input Sample

12 0
12 30
6 0
3 0
0 0

Output Sample

At 12:00 the angle is 0.0 degrees.
At 12:30 the angle is 165.0 degrees.
At 6:00 the angle is 180.0 degrees.
At 3:00 the angle is 90.0 degrees.

/*
让你参考，本程序从数组中取数据，你换成从文件读取就可以了
*/
#include <stdio.h>
void main()
{
    int i=0;
    float a,b;
    int data[5][2] = {{12,18},{12,30},{6,0},{3,0},{0,0}};
    while(data[i][0] != 0 || data[i][1] != 0)
    {
        a = (float)(data[i][0]%12+(float)data[i][1]/60) * 30.0;
        b = (float)data[i][1] * 6.0;
        printf("At %d:%02d the angle is %.1f degrees.\n",
            data[i][0],data[i][1],(a-b>0)?(a-b):(b-a));
        i++;
    }
    getch();
}