文章標題

ccf節日（C語言）
#include<stdio.h>

    int isrun(int y)
    {
        if((y%4==0&&y%100!=0)||(y%400==0))
        {
            return 1;

        }else{
             return 0;
        }
    }

int main()
{
    int a,b,c,y1,y2;
    long tobefore=0;
    int i,j,k;
    int todayweek,data;
    int month[2][13]={{0,31,28,31,30,31,30,31,31,30,31,30,31},
    {0,31,29,31,30,31,30,31,31,30,31,30,31}};
    int days[2]={365,366};
    scanf("%d%d%d%d%d",&a,&b,&c,&y1,&y2);   
    //a月第b個星期c 
    for(i=y1;i<=y2;i++)
    {
        //toBefore：1850年到i年給出月份a月前總共的天數 
        tobefore=0;
        for(j=1850;j<i;j++)
        {
            tobefore+=days[isrun(j)];
        }
    //  printf("年%d\n",tobefore);
        //到本月底end
        for(k=1;k<a;k++)
        {
            tobefore+=month[isrun(i)][k];   
        }
        //a月1號前一天是周幾
        todayweek=tobefore%7+2;
        if(todayweek==8)
        {
            todayweek=1;
        }
        if(c>=todayweek)
        {
            data=(b-1)*7+c-todayweek+1;
        }else{      
            data=b*7+c-todayweek+1;
        }

        if(month[isrun(i)][a]>=data)
        {
            printf("%d/%02d/%02d\n",i,a,data);
        }else{
            printf("none\n");
        }

    }
    return 0;   
}