摸索C語言 前身 : 摸索C語言 http://mypaper.pchome.com.tw/iustlovefish 現在即將就讀中興大學資訊科學與工程學系 XD

79愛的鼓勵 1訂閱站台

做法:IF

/****************************************************/

#include<stdlib.h>
#include<stdio.h>
main()
{
 int year,day,month;
   while(scanf("%d %d %d",&year,&month,&day)==3)
       {
          int M[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
          if(year%4==0&&year%100!=0||year%400==0)
             M[2]=29;
          if(year<1||month>12||month<1||day<1) {printf("Error\n");continue;}
          if(M[month]<day) {printf("Error\n");continue;}
          int sum=day,a;
          for(a=1;a<month;a++)
             sum+=M[a];
          if(sum==1)
              printf("It is 1 day in %d\n",year);
          else printf("It is %d days in %d\n",sum,year);
        }
  return 0;
}