万年历c语言 输出单月 求帮忙差错 打印万年历 输入某年某月 打印该月日历...

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#include

int isLeap(int year)

{

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

return 1;

else

return 0;}

int GetMonthDays(int year,int month)

{int z;

if(isLeap(year)==1&&month==2)

{z=29;}

switch(month)

{case 1:case 3: case 5:case 7:case 8: case 10:

case 12:{z=31;break;}

case 2:{z=28;break;}

case 4:case 6: case 9:

case 11:{z=30;break;}}

return z;}

int GetWeekDay(int year,int month,int day)

{int days,weekDay,k,m;

days=(year-1)*365+(year-1)/400+(year-1)/4-(year-1)/100;

k=1;m=month;m=m-1;

while(k<=m)

{days=days+GetMonthDays(year,k);

k=k+1;}

days=days+day;

weekDay=days%7;

return(weekDay);}

void PrintMonthCalender(int startDay,int Days)

{int n,year,month;n=1;

printf("Sun.\tMon.\tTue.\tWed.\tThu.\tFri.\tSat.\n");

switch(startDay)

{case 0:printf("%d\t",n);break;

case 1:printf("\t%d\t",n);break;

case 2:printf("\t\t%d\t",n);break;

case 3:printf("\t\t\t%d\t",n);break;

case 4:printf("\t\t\t\t%d\t",n);break;

case 5:printf("\t\t\t\t\t%d\t",n);break;

case 6:printf("\t\t\t\t\t\t%d\n",n);break;}

do

{startDay=GetWeekDay(year,month,++n);

switch(startDay)

{case 0:printf("%d\t",n);break;

case 1:printf("%d\t",n);break;

case 2:printf("%d\t",n);break;

case 3:printf("%d\t",n);break;

case 4:printf("%d\t",n);break;

case 5:printf("%d\t",n);break;

case 6:printf("%d\n",n);break;}

startDay=0;

}

while(n<=Days);}

main()

{int startDay,days,year,month;

printf("Please input year and month:");

scanf("%d%d",&year,&month);printf("The result is:\n");

days=GetMonthDays(year,month);

startDay=GetWeekDay(year,month,1);

PrintMonthCalender(startDay,days);printf("\n");

system("pause");

return 0;

}