经典C语言问题“黑色星期五”代码

黑色星期五在西方，星期五和数字13都代表着坏运气，两个不幸的个体最后结合成超级不幸的一天。所以，不管哪个月的十三日又恰逢星期五就叫“黑色星期五”。输入：年份输出：判断该年是否包含黑色星期五，如包含，给出具体日期程序：#includestdio.hintmain(){inti,n=0,year,month[12]={0};inta[13]={0,13,44,73,104,134,165,195,226,257,287,318,348};intb[13]={0,13,44,72,103,133,164,194,225,256,286,317,347};scanf(%d,&year);for(i=1;i13;i++){if((year%4==0&&year%100!=0)||year%400==0){if((year-1+((year-1)/4)-((year-1)/100)+((year-1)/400)+a[i])%7==5){n++;month[n]=i;}}elseif((year-1+((year-1)/4)-((year-1)/100)+((year-1)/400)+b[i])%7==5){n++;month[n]=i;}}if(n==1){printf(Thereis%dBlackFridayinyear%d.\n,n,year);printf(Itis:\n);printf(%d/%d/13\n,year,month[1]);}else{printf(Thereare%dBlackFridaysinyear%d.\n,n,year);printf(Theyare:\n);for(i=1;i=n;i++){printf(%d/%d/13\n,year,month[i]);}}return0;}