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[C/C++ 演算法]-萬年曆程式     #include <stdio.h> #include <stdlib.h>   intmain() {     int i,m,n,q;     int year, month, first_space, feb_days;       printf("請輸入西元");     scanf("%d",&year);       printf("請輸入月份");     scanf("%d",&month);         if(month<=12&& month>=1)     {         for(first_space=1,q=0;qyear-1900);q++)         {             if(q%4==0&& q%100!=0|| q%400==100)             {                  first_space=(first_space+366)%7;             }             else             {                 first_space=(first_space+365)%7;             }         }           //計算2月天數         if(year%4==0&& year%100!=0|| year%400==0)         {             feb_days =29;         }         else         {             feb_days =28;         }               int space[13]={0,first_space,0,0,0,0,0,0,0,0,0,0,0};         int days[13]={0,31,feb_days,31,30,31,30,31,31,30,31,30,31};               for(i=1;i<month;i++)         {             space[i+1]=(space[i]+days[i])%7;         }               printf("             %d年%d月\n\n",year,month);         printf("     日  一  二  三  四  五  六 \n   ");         for(m=1;m<=space[i];m++)         {             printf("    ");         }           for(n=1;n<=days[i];n++)         {             printf("=",n);               if(n%7==(7-space[i])%7)             {                 printf("\n   ");             }         }           printf("\n");      }      system("pause");      return0;   }