PTA1026-C语言-程序运行时间

#include <stdio.h>
#define CLK_TCK 100

int main()
{
    int C1,C2;
    int hh,mm,ss;
    int sec;
    scanf("%d%d",&C1,&C2);
    sec = (C2 - C1 + 50)/CLK_TCK;
    ss = sec % 60;
    sec /= 60;
    mm = sec % 60;
    sec /= 60;
    hh = sec % 60;
    printf("%02d:%02d:%02d",hh,mm,ss);
    return 0;
}