IoT C언어 0710 - EX13_2

#include <stdio.h>

void set(int h, int m);
void show(void);
void move(void);


int hour,min,ck,now=1;

int main(void)
{
    int m_temp;
    printf("최초 시간과 분 입력(24시간) : ");
    scanf("%d%d",&hour,&min);
    set(hour,min);
    show();
    printf("경과 시간 입력(분) : ");
    scanf("%d",&m_temp);
    now = 2;
    for(int i=0; i<m_temp; i++) move();
    if(hour==0&&ck==2)hour=12;
    show();

    return 0;

}

void set(int h, int m)
{
    if(h<12)ck=1;
    else
    {
        if(h==12) ck=2;
        else hour=h-12; ck=2;
    }
}

void show(void)
{
    char ampm[3][5] = {"dummy","AM","PM"};
    if(now==1)printf("설정된 시간 : %02d:%02d(%s)\n",hour,min,ampm[ck]);
    else printf("현재 시간 : %02d:%02d(%s)\n",hour,min,ampm[ck]);
}

void move(void)
{
    min++;
    if(min==60)
    {
        hour++;
        min=0;
    }
    if(hour>=12&&ck==1)
    {
        hour=hour-12;
        ck=2;
    }
    else if(hour>=12&&ck==2)
    {
        hour=hour-12;
        ck=1;
    }
}