哪位大神知道这段代码哪里错了？怎样改正？谢谢谢谢

include<stdio.h>
include<math.h>
void main()
{
int a[12];
int sum1,sum2,n,i;
printf("please input 12 numbers:");
for(i=1;i<=12;i++)
{
scanf("%d",&a[i]);
if(a[i]<=9&&a[i]>=0){;}
else{
printf("error!please input number>=0 and <=9");
break;
}
}
for(i=0;i<12;i++)
if(a[i]%2==0)
{
sum2=sum2+a[i];
}
else
{
sum1=sum1+a[i];
}
n=10-(sum1+sum2*3)%10;
printf("the jiaoyanma is %d",n);
}
谢谢谢谢谢谢