c语言万年历日历

悠悠 2022-04-14 03:54 221阅读 0赞

/*
     * cal.c
     *
     *  Created on: 2013-3-11
     *      Author: J.WANG
     */
    #include <stdlib.h>
    #include <stdio.h>
    //三维数组存放日期，每年12月，日历中最多排6行(星期)，每星期7天
    int days[12][6][7];
    //平年,闰年每个月的天数
    int ds[2][12] = { { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, { 31, 29,
    		31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } };
    //标题
    char title[] = "SUM MON TUE WED THU FRI SAT";
    //月份
    int m[4][3] = { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 }, { 10, 11, 12 } };
    //月份
    char mt[][4] = { "JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV","DEC" };
    
    //根据蔡勒公式计算日期星期几
    int wd(int year, int m, int d) {
    	int c, y, w;
    	if (m <= 2) {
    		year--;
    		m += 12;
    	}
    	c = year / 100;
    	y = year % 100;
    	w = (c / 4 - 2 * c + y + y / 4 + 13 * (m + 1) / 5 + d - 1);
    	return (w % 7 + 7) % 7;
    }
    //闰年平年
    int leapYear(int year) {
    	return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
    }
    
    int main() {
    	int i, j, k, leap, fd,year;
    
    	scanf("%d%*c",&year);
    
    	//初始三维数组为0
            //days[12][6][7]={0};
    	for (i = 0; i < 12; i++) {
    		for (j = 0; j < 6; j++) {
    			for (k = 0; k < 7; k++) {
    				days[i][j][k] = 0;
    			}
    		}
    	}
    	fd = wd(year, 1, 1);
    	leap = leapYear(year);
    	//三维数组赋值
    	for (i = 0; i < 12; i++) {
    		for (k = 0, j = 1; j <= ds[leap][i]; j++) {
    			days[i][k][fd] = j;
    			fd = (++fd) % 7;
    			if (fd == 0) {
    				k++;
    			}
    		}
    	}
    	//输出数据
    	for (i = 0; i < 4; i++) {
    		printf(" %13s   %27s   %27s \n", mt[m[i][0] - 1], mt[m[i][1] - 1],
    				mt[m[i][2] - 1]);
    		printf(" %s   %s   %s \n", title, title, title);
    		for (j = 0; j < 6; j++) {
    			//1,4,7
    			for (k = 0; k < 7; k++) {
    				if (days[m[i][0] - 1][j][k])
    					printf("%4d", days[m[i][0] - 1][j][k]);
    				else
    					printf("    ");
    			}
    			printf("  ");
    			//2,5,8
    			for (k = 0; k < 7; k++) {
    				if (days[m[i][1] - 1][j][k])
    					printf("%4d", days[m[i][1] - 1][j][k]);
    				else
    					printf("    ");
    			}
    			printf("  ");
    			//3,6,9
    			for (k = 0; k < 7; k++) {
    				if (days[m[i][2] - 1][j][k])
    					printf("%4d", days[m[i][2] - 1][j][k]);
    				else
    					printf("    ");
    			}
    			printf("\n");
    		}
    
    	}
    	return 0;
    }

打印格式：

![ebeb568a-963d-3e88-a039-fd366f1515b4.png][]

[ebeb568a-963d-3e88-a039-fd366f1515b4.png]: /images/20220414/82ae6340744443c7ab90aa57c3a32b53.png