#include <stdio.h> #include <stdlib.h>void main(void) {int a;int i; //判斷星期幾int j;//判斷月和日；short month = 1;short day=0;short arrDay[] = { 31,29,31,30,31,30,31,31,30,31,30,31 };char arrWeek[][7] = { "星期二","星期三","星期四","星期五","星期六","星期日","星期一"}; //也能用指針數組代替printf("Please a day between 1~366\n");scanf_s("%d", &a);i = a % 7;for (j = 0; j < 12; j++){if (a <= arrDay[j]){day = a;break;}a -= arrDay[j];month++;}printf("The date is :2020年%d月%d日-%s\n", month, day, arrWeek[i]);system("pause"); }

總結

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