使用C语言实现日历显示，下面是windows和Linux的代码

1、windows版

#ifdef _WIN32

#define _CRT_SECURE_NO_WARNINGS

#endif

#include

/*判断输入的年份是否为闰年

**参数说明：year,要判断的年份

**返回值 1：是闰年，0：不是闰年

*/

int Isleap(int year)

{

if ((year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0)))

return 1;

else

return 0;

}

/*判断输入年份二月份的天数

**参数说明：year,要判断的年份；month，要判断的月份

**返回值:Day[month-1],上个月(month-1)的天数

*/

int Max_day(int year, int month)

{

int Day[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };

if (Isleap(year) == 1)

Day[1] = 29;

return Day[month - 1];

}

/*计算输入的日期是这一年的多少天

**参数说明：year,month,day 分别为输入的年、月、日

**返回值:sum,输入的日期是这一年的多少天

*/

int Total_day(int year, int month, int day)

{

int sum = 0;

int i = 1;

for (i = 1; i < month; i++)

sum = sum + Max_day(year, i);

sum = sum + day;

return sum;

}

/*由输入的日期判断当天是星期几

**参数说明：year,month,day 分别为输入的年、月、日

**返回值:count,0～6，分别表示星期日～星期六

*/

int Weekday(int year, int month, int day)

{

int count;

count = (year - 1) + (year - 1) / 4 - (year - 1) / 100 + (year - 1) / 400 + Total_day(year, month, day);

count = count % 7;

return count;

}

/*显示输入的日期是星期几

**参数说明：year,month,day 分别为输入的年、月、日

**返回值:无

*/

void display_week(int year, int month, int day)

{

int count;

count = Weekday(year, month, day);

switch (count)

{

case 0:printf("\t%d-%d-%d is Sunday\n", year, month, day); break;

case 1:printf("\t%d-%d-%d is Monday\n", year, month, day); break;

case 2:printf("\t%d-%d-%d is Tuesday\n", year, month, day); break;

case 3:printf("\t%d-%d-%d is Wednesday\n", year, month, day); break;

case 4:printf("\t%d-%d-%d is Thursday\n", year, month, day); break;

case 5:printf("\t%d-%d-%d is Friday\n", year, month, day); break;

case 6:printf("\t%d-%d-%d is Saturday\n", year, month, day); break;

default: system("cls"); printf("error\n");

}

}

/*显示输入的日期的当月日历

**参数说明：year,month,day 分别为输入的年、月、日

**返回值:无

*/

void display_month(int year, int month, int day)

{

int i = 0, j = 1;

int week, max;

week = Weekday(year, month, 1); //由每月1号确定打印制表符的个数

max = Max_day(year, month);

printf("\n\t\t\t%d年%d月", year, month);

printf("\n\tSUN\tMON\tTUE\tWED\tTHU\tFRI\tSAT\n");

for (i = 0; i < week; i++)

printf("\t");

for (j = 1; j <= max; j++)

{

printf("\t%d", j);

if (i % 7 == 6)

printf("\n");

i++;

}

printf("\n");

}

int main()

{

int year, month, day;

printf("\tplease enter year,month,day: ");

scanf("%d,%d,%d", &year, &month, &day);

if (month<1 || month>12 || day<1 || day>31)

{

printf("error...\n");

return -1;

}

printf(" \t%d年%d月%d日是这一年的第%d天\n\ ", year, month, day, Total_day(year, month, day));

display_week(year, month, day);

display_month(year, month, day);

return 0;

}

运行结果：

2、Linux版本

#include

/*判断输入的年份是否为闰年

**参数说明：year,要判断的年份

**返回值 1：是闰年，0：不是闰年

*/

int Isleap(int year)

{

if( (year%400==0)||((year%4==0)&&(year%100!=0)) )

return 1;

else

return 0;

}

/*判断输入年份二月份的天数

**参数说明：year,要判断的年份；month，要判断的月份

**返回值:Day[month-1],上个月(month-1)的天数

*/

int Max_day(int year, int month)

{

int Day[12]={31,28,31,30,31,30,31,31,30,31,30,31};

if(Isleap(year)==1)

Day[1]=29;

return Day[month-1];

}

/*计算输入的日期是这一年的多少天

**参数说明：year,month,day 分别为输入的年、月、日

**返回值:sum,输入的日期是这一年的多少天

*/

int Total_day(int year, int month ,int day)

{

int sum=0;

int i=1;

for(i=1;i

sum=sum+Max_day(year,i);

sum=sum+day;

return sum;

}

/*由输入的日期判断当天是星期几

**参数说明：year,month,day 分别为输入的年、月、日

**返回值:count,0～6，分别表示星期日～星期六

*/

int Weekday(int year, int month ,int day)

{

int count;

count=(year-1)+(year-1)/4-(year-1)/100+(year-1)/400 +Total_day(year,month,day);

count=count%7;

return count;

}

/*显示输入的日期是星期几

**参数说明：year,month,day 分别为输入的年、月、日

**返回值:无

*/

void display_week(int year, int month , int day)

{

int count;

count=Weekday(year,month,day);

switch(count)

{

case 0:printf("\033[32m\t%d-%d-%d is Sunday\n\033[0m",year,month,day);break;

case 1:printf("\033[32m\t%d-%d-%d is Monday\n\033[0m",year,month,day);break;

case 2:printf("\033[32m\t%d-%d-%d is Tuesday\n\033[0m",year,month,day);break;

case 3:printf("\033[32m\t%d-%d-%d is Wednesday\n\033[0m",year,month,day);break;

case 4:printf("\033[32m\t%d-%d-%d is Thursday\n\033[0m",year,month,day);break;

case 5:printf("\033[32m\t%d-%d-%d is Friday\n\033[0m",year,month,day);break;

case 6:printf("\033[32m\t%d-%d-%d is Saturday\n\033[0m",year,month,day);break;

default: system("cls");printf("error\n");

}

}

/*显示输入的日期的当月日历

**参数说明：year,month,day 分别为输入的年、月、日

**返回值:无

*/

void display_month(int year, int month, int day)

{

int i=0,j=1;

int week,max;

week=Weekday(year,month,1); //由每月1号确定打印制表符的个数

max=Max_day(year,month);

printf("\033[34m\n\t\t\t%d年%d月\033[0m",year,month);

printf("\033[31m\n\tSUN\tMON\tTUE\tWED\tTHU\tFRI\tSAT\n\033[0m");

for(i=0;i

printf("\t");

for(j=1;j<=max;j++)

{

printf("\t%d",j);

if(i%7==6)

printf("\n");

i++;

}

printf("\n");

}

int main()

{

int year,month,day;

printf("\tplease enter year,month,day: ");

scanf("%d,%d,%d",&year,&month,&day);

if(month<1||month>12||day<1||day>31)

{

printf("error...\n");

return -1;

}

printf("\033[32m\t%d年%d月%d日是这一年的第%d天\n\033[0m",year,month,day,Total_day(year,month,day));

display_week(year,month,day);

display_month(year,month,day);

return 0;

}

运行结果：