项目1源代码

#include <stdio.h>
//计算1990.1.1~year.1.1前一天的天数
YDAYS(int year)
{ int i,n=0;
int Ydays,sum=0;
for(i=1990;i<year;i++)
{ if((i%4==0 && i%100!=0) ||(i%400==0))
{
n++;
}
}
Ydays=(year-1990)*365+n; /*年的天数*/
printf("===========Ydays = %d============\n",Ydays);
return Ydays;
}
//计算year年的每月的天数
MDAYS(int year,int month)
{ int j,days;
int Mdays=0;
for(j=1;j<month;j++)
{ if (j==1||j==3 || j==5 || j==7|| j==8|| j==10 || j==12) {
days=31;
}
else if(j==2)
{
if(year%4==0 && year%100!=0 ||year%400==0)
{
days=29;
}
else
{
days=28;
}
}
else
{ days=30; }
Mdays+=days;
}
return Mdays;
}
//1990.1.1~year.month.1总天数
total(int year,int month)
{ int totaldays;
totaldays= YDAYS(year)+MDAYS(year,month);
return totaldays;
}
//计算输入当月
MONTH(int year,int month)
{ int days;
if (month==1||month==3 || month==5 || month==7|| month==8|| month==10 || month==12)
{
days=31;
}
else if(month==2)
{
if(year%4==0 && year%100!=0 ||year%400==0)
{
days=29;
}
else
{
days=28;
}
}
else
{ days=30; }
return days;
}
//计算year年month月第一天是星期几
firstDayOfMonth(int year,int month)
{
int temp,first,totaldays;
totaldays = total(year,month);
temp=totaldays%7+1;
if(temp==7)
first=0;
else
first=temp;
return first;
}
//输出日历函数
void print(int year,int month)
{
int k,m;
int totaldays = total(year,month);
int first = firstDayOfMonth(year,month);
int days= MONTH(year,month);
printf("******************totaldays%d************\n",totaldays);
printf("日\t一\t二\t三\t四\t五\t六\n");
for(k=0;k<first;k++)
{
printf("\t");
}
for(m=1;m<=days;m++)
{
if(1+(totaldays+m-1)%7==6)
{
printf("%d\n",m);
}
else
printf("%d\t",m);
}
}
void main()
{
int year,month;
printf("请输入要查询的年份和月份：");
scanf("%d%d",&year,&month);
print(year,month);
}.。