求指点哪错了?
#include <stdio.h>
int main()
{ int sum;
int year = 2008;
int month = 8;
int day = 8;
int month1 =31, month3=31, month4 =30,mouth5=31,mouth6=30,
month7=31, month8=31, month9=30,month10=31, month11=30;
if(year%4==0)
{ int month2=29;}
else
{ int month2=28;}
int moutha=month-1;
switch(montha)
{case 1:sum=month1;
break;
case 2:sum=month1+month2;
break;
case 3:sum=month1+month2+month3;
break;
case 4:sum=month1+month2+month3+month4;
break;
case 5:sum=month1+month2+month3+month4+month5;
break;
case 6:sum=month1+month2+month3+month4+month5+month6;
break;
case 7:sum=month1+month2+month3+month4+month5+month6
+month7;
break;
case 8:sum=month1+month2+month3+month4+month5+month6
+month7+month8;
break;
case 9:sum=month1+month2+month3+month4+month5+month6
+month7+month8+month9;
break;
case 10:sum=month1+month2+month3+month4+month5+month6
+month7+month8+month9+month10;
break;
case 11:sum= month1+month2+month3+month4+month5+month6
+month7+month8+month9+month10+mounth11;
break;
default:
break;
}
sum=sum+day;
printf("d%年d%月d%日是该年的第d%天",year,mouth,day,sum);
return 0;
}