#include<stdio.h>
int main(void)
{
    int n,i,n1=0,n2=0;
    char m[11];
    printf("请输入产品类型代码：");
    for(i=0;i<11;i++)
    {
        if(i==1)
        {
            getchar();
            printf("请输入制造商代码：");
        }
        if(i==6)
        {
            getchar();
            printf("请输入产品代码：");
        }
        scanf("%c",&m[i]);
        if(i%2==0)
            n1+=(m[i]-'0');
        else
            n2+=(m[i]-'0');
    }
    n=9-(3*n1+n2-1)%10;
    printf("校验码 = %d\n",n);
    return 0;
}